15:57:49 <RRSAgent> RRSAgent has joined #rdb2rdf
15:57:49 <RRSAgent> logging to http://www.w3.org/2010/08/31-rdb2rdf-irc
15:57:51 <trackbot> RRSAgent, make logs world
15:57:51 <Zakim> Zakim has joined #rdb2rdf
15:57:53 <trackbot> Zakim, this will be 7322733
15:57:53 <Zakim> ok, trackbot; I see SW_RDB2RDF()12:00PM scheduled to start in 3 minutes
15:57:54 <trackbot> Meeting: RDB2RDF Working Group Teleconference
15:57:54 <trackbot> Date: 31 August 2010
15:58:06 <mhausenblas> Agenda: http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0060.html
15:58:10 <mhausenblas> Chair: Michael
15:58:18 <mhausenblas> scribenick: boris 
16:00:21 <ericP> Zakim, please dial ericP-office
16:00:21 <Zakim> ok, ericP; the call is being made
16:00:22 <Zakim> SW_RDB2RDF()12:00PM has now started
16:00:24 <Zakim> +EricP
16:01:06 <Zakim> +michael
16:01:11 <nunolopes> nunolopes has joined #RDB2RDF
16:01:36 <mhausenblas> Zakim, nunolopes is with me
16:01:36 <Zakim> sorry, mhausenblas, I do not recognize a party named 'mhausenblas'
16:01:43 <mhausenblas> Zakim, michael is mhausenblas 
16:01:43 <Zakim> +mhausenblas; got it
16:01:46 <mhausenblas> Zakim, nunolopes is with me
16:01:46 <Zakim> +nunolopes; got it
16:01:48 <Zakim> +OpenLink_Software
16:01:50 <nunolopes> Zakim, nunolopes is with mhausenblas
16:01:50 <Zakim> nunolopes was already listed in mhausenblas, nunolopes
16:02:08 <MacTed> Zakim, OpenLink_Software is temporarily me
16:02:08 <Zakim> +MacTed; got it
16:02:18 <soeren> soeren has joined #RDB2RDF
16:02:28 <mhausenblas> Zakim, boris is with me
16:02:28 <Zakim> +boris; got it
16:02:33 <mhausenblas> Zakim, who's here?
16:02:33 <Zakim> On the phone I see EricP, mhausenblas, MacTed
16:02:35 <Zakim> mhausenblas has mhausenblas, nunolopes, boris
16:02:37 <Zakim> On IRC I see soeren, nunolopes, Zakim, RRSAgent, alexdeleon, boris, mhausenblas, MacTed, iv_an_ru, LeeF, ericP, trackbot
16:02:45 <Zakim> +Souri
16:03:06 <mhausenblas> RRSAgent, draft minutes
16:03:06 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
16:03:12 <mhausenblas> RRSAgent, make logs publix
16:03:13 <Souri> Souri has joined #rdb2rdf
16:03:15 <mhausenblas> RRSAgent, make logs public
16:03:19 <Seema> Seema has joined #rdb2rdf
16:03:35 <Zakim> + +49.322.222.0.aaaa
16:03:54 <mhausenblas> Zakim, aaaa is soeren 
16:03:54 <Zakim> +soeren; got it
16:04:08 <hhalpin> hhalpin has joined #rdb2rdf
16:04:14 <Zakim> + +1.603.891.aabb
16:04:36 <Seema> zakim, +aabb is me
16:04:36 <Zakim> sorry, Seema, I do not recognize a party named '+aabb'
16:04:40 <mhausenblas> Zakim, aabb is Seema 
16:04:40 <Zakim> +Seema; got it
16:04:48 <mhausenblas> Zakim, who's here?
16:04:48 <Zakim> On the phone I see EricP, mhausenblas, MacTed, Souri, soeren, Seema
16:04:49 <Zakim> mhausenblas has mhausenblas, nunolopes, boris
16:04:50 <Zakim> On IRC I see hhalpin, Seema, Souri, soeren, nunolopes, Zakim, RRSAgent, alexdeleon, boris, mhausenblas, MacTed, iv_an_ru, LeeF, ericP, trackbot
16:04:57 <mhausenblas> regrets+ Richard
16:05:03 <mhausenblas> regrets+ Angela
16:05:04 <juansequeda> juansequeda has joined #rdb2rdf
16:05:08 <mhausenblas> regrets+ Ashok
16:05:38 <mhausenblas> http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0060.html
16:05:51 <mhausenblas> RRSAgent, draft minutes 
16:05:51 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
16:06:00 <Zakim> +juansequeda
16:06:44 <mhausenblas> Topic: Admin
16:06:58 <mhausenblas> PROPOSAL: Accept the minutes of last meeting, see
16:07:00 <mhausenblas> http://www.w3.org/2010/08/24-rdb2rdf-minutes.html
16:07:05 <MacTed> Zakim, mute me
16:07:05 <Zakim> MacTed should now be muted
16:07:17 <boris> +1
16:07:18 <juansequeda> +1
16:07:35 <boris> RESOLUTION: last minutes approved
16:08:02 <mhausenblas> Topic: Revised proposal from Souri
16:08:58 <boris> souri: dont have comments rgarding lookup table
16:09:02 <Zakim> +[IPcaller]
16:09:07 <boris> souri: richad is not here ... so ...
16:09:39 <boris> souri: To find actual use case for this lookup table
16:09:55 <boris> souri: let's discuss this next week when richard will be here
16:09:59 <boris> Michael: ok
16:10:09 <mhausenblas> Topic:  Test Cases
16:10:23 <boris> michael: we need to create test cases ....
16:10:44 <boris> michael: boris volunteer to take care of this subject
16:10:46 <mhausenblas> http://www.w3.org/2001/sw/rdb2rdf/wiki/R2RML_Test_Cases
16:10:59 <boris> michael: brief introduction for the test cases
16:11:08 <mhausenblas> http://www.w3.org/2001/sw/rdb2rdf/test-cases/
16:11:15 <boris> michael: currently the docs are as pdf 
16:11:48 <boris> michael: we have came for the test cases
16:12:04 <boris> michael: input sql, and the mapping file and the expect output 
16:12:44 <boris> michael: the sparql query will check if the resultant rdf is oik
16:12:51 <boris> michael: questions?
16:13:19 <boris>  someone: .... all the triples in the sparql query?
16:13:33 <boris> someone: no additonal triples
16:13:41 <boris> someone: it is not testing for conformance
16:13:49 <juansequeda> +q to ask what are we testing. Is it correctness and/or performance ?
16:13:57 <mhausenblas> s/someone/soeren 
16:14:02 <boris> someone: test the triples not the superset
16:14:31 <boris> michael: no test case for performance
16:14:37 <boris> ....: two fold
16:14:59 <boris> ...: check the semantics we describe in the R2RML doc is what we mean
16:15:02 <ericP> s/someone/souren/
16:15:21 <boris> ....: during the phase of the development of the R2RML DOC
16:15:23 <cygri> cygri has joined #rdb2rdf
16:15:24 <hhalpin> correctness testing
16:15:37 <boris> ...: next phase will be to test implementarions
16:16:02 <boris> juan: we will give manually the input and the output
16:16:03 <Souri> SPARQL working group has good and tested scheme for test specifications
16:16:10 <boris> michael: yes... 
16:16:25 <ericP> q+ to second soundness
16:16:34 <boris> michael: it is useful have sparql query rather than the rdf triples, ... but we are open to discuss
16:16:46 <juansequeda> souri, can you send out the link to the sparql group's test cases
16:16:52 <boris> ...: we can have additonal triples, provenance for exmaple ....
16:17:07 <boris> ....: that's why is good to have the sparql queries
16:17:08 <mhausenblas> q?
16:17:12 <juansequeda> ack juansequeda
16:17:12 <Zakim> juansequeda, you wanted to ask what are we testing. Is it correctness and/or performance ?
16:17:12 <mhausenblas> ack juansequeda 
16:17:17 <mhausenblas> ack ericP 
16:17:17 <Zakim> ericP, you wanted to second soundness
16:17:40 <hhalpin> soundness would be a subset of correctness testing
16:17:51 <boris> eric: we have bunch of implementations with more liberal equality testing ... 
16:18:09 <Zakim> -soeren
16:18:14 <boris> ....: we have at least it is true, ... we couldn't tell there are some erronous values
16:18:28 <boris> ....: we can have some "extened" mode
16:18:34 <boris> ...: for the implementaros
16:18:47 <Zakim> +soeren
16:18:48 <boris> ....: completeness .... 
16:18:53 <mhausenblas> s/..../ericP 
16:19:07 <boris> michael: we are open to discuss more on this ...
16:19:22 <boris> ...: if you think this is more sense is ok, 
16:19:29 <mhausenblas> q?
16:20:01 <Zakim> +[IPcaller.a]
16:20:10 <boris> soeren: it is very important, it is really importanto to check no additional thing is included
16:20:13 <cygri> zakim, IPcaller.a is cygri
16:20:13 <Zakim> +cygri; got it
16:20:34 <boris> soeren: maybe add another sparql queries included the numbrers of triples
16:21:02 <boris> michael: it will take some time to set up completely ...
16:21:04 <ericP> <sparql><boolean>true</boolean>
16:21:41 <boris> michael: we are going to work on test cases, and we once we will have sth there ....
16:21:56 <boris> juan: one example database?
16:22:15 <boris> michael: one example database per test case rathern than one big database
16:22:38 <boris> juan: we can have non-normalized database
16:22:58 <boris> michael: think in very simple test cases ... later on we can have more complex test cases
16:23:11 <boris> michael: in the beginning only simple test cases
16:23:29 <boris> juan: test cases for RDF, or SPARQL?
16:23:43 <boris> michael: yes, they are similiar, .... 
16:23:57 <boris> michael: questions ...? ...
16:24:05 <mhausenblas> Topic:  What are we going to do about the Default Mapping?
16:24:17 <boris> eric: status?
16:24:37 <boris> eric: Richard and Eric, write some use cases, originally for simple scenarios
16:24:53 <boris> eric: single tables with primary key 
16:25:02 <mhausenblas> ACTION: Michael to send sample TC to the group
16:25:02 <trackbot> Created ACTION-71 - Send sample TC to the group [on Michael Hausenblas - due 2010-09-07].
16:25:37 <boris> eric: rewrote the notion of you have relations with or not primary key, not always composed, and FK not composed
16:25:50 <hhalpin> note that I'm happy to help set up test-cases for you boris.
16:25:51 <boris> eric: there is an example of that on the document
16:25:58 <ericP> http://www.w3.org/2001/sw/rdb2rdf/directGraph/
16:25:59 <hhalpin> i.e. in W3C CVS etc.
16:26:09 <hhalpin> I'm happy to take that as an action.
16:26:21 <ericP> http://www.w3.org/2001/sw/rdb2rdf/directGraph/#multi-key
16:26:31 <boris> eric: multi-key example
16:26:58 <boris> juan: multiatrtibute key?
16:27:27 <boris> eric: is describing the table ...
16:28:46 <boris> eric: hardest cases in Relational model ... bunch of set defintions on the section 5 ....
16:29:03 <boris> ....: relation definitions 4.1 to 4.2 ...
16:29:37 <boris> juan: discuss with marcelo about, work together on this .... from the DB perspective ... it's a kind of BNF rule ...
16:29:51 <boris> juan: this is not the way you define a relational model
16:29:53 <cygri> q+
16:29:59 <boris> juan: suggest to put this in datalog?
16:30:20 <boris> juan: no use this BNF style
16:30:39 <boris> .... : don't see anything to coming out, this is just bunch of rules
16:30:43 <mhausenblas> ack cygri
16:31:11 <iv_an_ru> iv_an_ru has joined #rdb2rdf
16:31:26 <boris> cygri: doesn't  agree to use the definition from the DB ?
16:32:08 <juansequeda> http://www.w3.org/2001/sw/rdb2rdf/wiki/Semantics_of_R2RML
16:32:13 <boris> juan: the semantics of datalog .... 
16:32:24 <boris> juan: ... every predicate is a relation ... right there
16:32:32 <boris> juan: well defined semantics
16:32:42 <boris> ....: eric just have BNF rules and type of injectors
16:32:52 <mhausenblas> q?
16:33:12 <boris> cygri: understandability more important to be formal
16:33:24 <juansequeda> http://www.w3.org/2001/sw/rdb2rdf/wiki/Default_Mapping
16:33:27 <soeren> +q
16:33:36 <boris> cygri: insits to check how the "text bokks" introduce relational model
16:33:49 <mhausenblas> s/bokks/books
16:33:57 <mhausenblas> RRSAgent, draft minutes 
16:33:57 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
16:33:57 <boris> juan: link to the wiki, we have on datalog is much understable that the thing from eric
16:34:11 <boris> cygri: not talking as eric proposal
16:34:19 <boris> ...: just check text books
16:34:31 <boris> dan: check the books and chapters of datalogs
16:34:41 <mhausenblas> ack soeren 
16:35:03 <boris> soeren: relational algebra introduces the semantics of relational db
16:35:17 <boris> ...: datalog will introduce things more complicated
16:35:26 <boris> ....: let's focus only the relational algebra
16:35:27 <ericP> q+
16:35:49 <boris> dan: let's look at the dabases ... datalog = realtiona algebra 
16:36:12 <ericP> q+ to say that soeren's proposal would work for the doc which translates queries
16:36:18 <boris> dan: a lot of people will find more confortable ... encourage people to check relations books
16:36:33 <boris> dan: what is commonly done
16:36:44 <boris> juan: sparql is datalog and datalog = relational algebra
16:36:47 <mhausenblas> ack ericP
16:36:47 <Zakim> ericP, you wanted to say that soeren's proposal would work for the doc which translates queries
16:37:06 <mhausenblas> q+ to ask who the intended audience of this document is
16:37:09 <boris> eric: there is no notion of join (forexmaple)
16:37:35 <boris> ....: relational algegra .... (joins, etc) ... not use in ... RDF
16:37:38 <mhausenblas> q?
16:37:49 <boris> juan: only selection and projection .... 
16:38:07 <boris> eric: datalog is horn- functions ... two issues
16:38:18 <juansequeda> DATALOG: course(id, name) = SQL: select id, name from course
16:38:19 <boris> eric: 1. I will need prolog to the some operations
16:38:35 <boris> dan: commonly accepted to add this in datalog
16:38:57 <boris> juan: the semantics of this mapping language is based in datalog ...
16:39:03 <boris> eric: is it prolog?
16:39:10 <boris> dan: yes, datalog is a subset of prolog
16:39:30 <mhausenblas> ack me
16:39:30 <Zakim> mhausenblas, you wanted to ask who the intended audience of this document is
16:40:05 <boris> michael: who is the intented audience will be? who is supposed to read this? ... and the we can follow some direction
16:40:23 <boris> eric: d2r folks
16:40:42 <boris> michael: people who write the engine
16:40:43 <boris> ?
16:40:53 <boris> eric: write the engine implemetatnoins
16:41:02 <boris> juan: not only d2r, oracle, ibm
16:41:20 <boris> micahel: people who write the engine ... is the primary audience
16:42:13 <boris> eric: machine exectubale transforamtion written in prolog? ... another issue is the set semantics .... in some cases you use cardinality
16:42:41 <boris> eric: add aggregates it costs ..... how we presevered cardinalidty, set of sematnics
16:43:17 <boris> when sql standaraziton process ... there wont be agregates? .... cardinality was expense?
16:43:29 <boris> soeren: practical to allow duplicates ...
16:44:08 <boris> soeren: supose someone define a mapping ... do not have a primary key ... two rows the same URI ... unless we use distintict we will have duplicates
16:44:33 <soeren> s/soeren/souri
16:44:46 <boris> souri: try to supress duplicates ... not easy
16:44:51 <mhausenblas> s/soeren: practical/souri: practical
16:45:09 <mhausenblas> s/soeren: supose/souri: suppose
16:45:09 <Zakim> -soeren
16:45:16 <mhausenblas> RRSAgent, draft minutes
16:45:16 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
16:45:19 <boris> eric: if there is no PK, expressing attributes in a tuple, ... blank node
16:45:41 <Zakim> +soeren
16:45:53 <boris> souri: define a mapping, Uri corresponds a row ... every instance ....
16:46:01 <mhausenblas> q?
16:46:01 <boris> eric: project the uniqueness ...
16:46:30 <boris> eric: not necessary ... 
16:46:56 <boris> ....: example of tweets  .... not identifiers for the tweets¿ ... example on section 2.2
16:47:06 <boris> ...: non-existing PK
16:47:18 <boris> .... : preserves cardinality ...
16:47:44 <boris> souri: basically again, best practice from his point view .... 
16:48:11 <boris> souri: implementation of bad cases .... 
16:48:36 <boris> michael: we have one concrete proposal from eric ... and default mapping by Juan is an alternative proposal
16:48:44 <boris> juan: again everything in datalog
16:48:47 <boris> eric: is prolog
16:49:03 <boris> juan: if we present the tihngs to ibm, is not going to be easy
16:49:17 <boris> soeren: oracle doc. there are a lot of datalog?
16:49:39 <boris> soeren: first relational algebra ... his impresion ... 
16:49:48 <boris> soeren: or I am wrong?
16:50:06 <boris> souri: more sql, more practical people
16:50:25 <boris> souri: there are some things in relational algebra
16:50:43 <boris> souri: practitioners use tables, cols, not theory
16:50:57 <mhausenblas> http://www.w3.org/2001/sw/rdb2rdf/directGraph/
16:50:59 <hhalpin> +1 souri, and let's see what subset of it we can grab in Datalog/RIF.
16:51:16 <boris> michael: it will be good if you take the eric's job and rewrite into datalog?
16:51:28 <boris> juan:he did it already
16:51:51 <mhausenblas> s/juan:he/juan: Marcelo and I
16:52:00 <ericP> q+ to ask if we can talk about prolog instead of datalog
16:52:21 <boris> souri: is like a rule ... what we that expect
16:52:35 <boris> juan: is a rule ... default mapping should have semantics
16:52:35 <mhausenblas> RRSAgent, draft minutes
16:52:35 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
16:52:39 <cygri> q+
16:52:54 <boris> juan: BNF and the semantics are in datalog ... that is his concern
16:53:04 <mhausenblas> q?
16:53:06 <boris> michael: we can expect sth next week?
16:53:08 <boris> juan: ok
16:53:16 <mhausenblas> ack ericP 
16:53:16 <Zakim> ericP, you wanted to ask if we can talk about prolog instead of datalog
16:53:29 <boris> ericP: prolog?
16:53:44 <boris> juan: datalog + built-in function, not prolog
16:53:53 <mhausenblas> how about prolog--
16:53:55 <mhausenblas> :)
16:54:00 <mhausenblas> q?
16:54:06 <boris> ericP: is in between ... ok
16:54:15 <mhausenblas> ack cygri 
16:54:45 <boris> juan: semantics of the language are eq to datalog
16:54:58 <boris> cygri: there are different ways to define the semantics of the language
16:55:19 <boris> ...: of course the semantics have to be written 
16:55:20 <hhalpin> cygri - basically *any* mathematical structure can serve as semantics
16:55:30 <hhalpin> and we do not *have* to write them in my opinion.
16:55:37 <hhalpin> But often it does help us think through what's going on in the spec.
16:55:47 <boris> cygri: db community is not datalog ...
16:55:52 <boris> cygri: another arguments?
16:56:08 <hhalpin> Generally, I think we should do the semantics in a way that ideally would help a programmer understand what's going on.
16:56:10 <boris> dan: important who the audience is for the document?
16:56:20 <boris> dan: implementors of the engine
16:56:27 <hhalpin> Datalog, being so close to FOL, is some thing quite a few people understand.
16:56:38 <hhalpin> but we need to be clear the semantics are also subservient to the users.
16:56:45 <boris> ...: different database implementors types
16:56:56 <hhalpin> i.e. ashoks' point was correct
16:57:03 <hhalpin> that we don't want to restrict users
16:57:17 <boris> juan: reason why to datalog is because SPARQL=SQL via datalog
16:57:25 <hhalpin> or make them learn a whole new language..
16:57:39 <boris> juan: sematnics of the language = datalog ... here are the semantics
16:57:45 <hhalpin> my suggestion would be to go forward with merging eric's work and writing down souri's using a syntax
16:57:53 <hhalpin> and *then* work on the semantics on the side.
16:57:56 <boris> juan: we should learn from the issues about the semantics
16:58:13 <boris> cygri: we can write the semantics in different languages
16:58:17 <hhalpin> and the semantics might help us catch a bug.
16:58:24 <hhalpin> they tend to...
16:58:26 <boris> dan: including english, NL ...example
16:58:35 <boris> michael: juan means formal semantics = semanticas
16:58:56 <hhalpin> however, we do not want semantics to be a rathole, we need to get a FPWD out asap.
16:59:12 <ericP> 1+
16:59:13 <ericP> q+
16:59:23 <boris> soeren: formal semantics are very important .... translating SPARQL algebra into relational algebra ... it will be clear ...
16:59:40 <mhausenblas> q?
16:59:42 <soeren> http://www.informatik.uni-leipzig.de/~auer/rdb2rdf/semantics.pdf
16:59:43 <boris> juan: he has to look at that ... sparql to sql translate
16:59:54 <mhausenblas> ack ericP 
17:00:30 <hhalpin> let's get FPWD with syntax based on a combo of Souri's proposal and ericP's proposal out there.
17:00:34 <juansequeda> Semantics preserving SPARQL-to-SQL translation -> http://www.cs.wayne.edu/~shiyong/papers/dke09_artem.pdf
17:00:39 <boris> ericP:  continue on the direct mapping ....
17:01:19 <boris> ericP: RDB here is the RDF graph ... SPARQL query here is the underilyng relational algebra 
17:01:41 <boris> ericP: first option
17:02:02 <boris> michael: neext week about the syntax
17:02:16 <boris> michael: and the semantics, and juan let us know if he is ready or not
17:02:30 <Zakim> -soeren
17:02:31 <Zakim> -Souri
17:02:34 <Zakim> -juansequeda
17:02:35 <Zakim> -[IPcaller]
17:02:35 <Zakim> -mhausenblas
17:02:38 <Zakim> -cygri
17:02:41 <Zakim> -EricP
17:02:45 <mhausenblas> RRSAgent, draft  minutes
17:02:45 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
17:02:49 <Zakim> -MacTed
17:02:58 <Zakim> -Seema
17:02:59 <Zakim> SW_RDB2RDF()12:00PM has ended
17:03:01 <Zakim> Attendees were EricP, mhausenblas, nunolopes, MacTed, boris, Souri, +49.322.222.0.aaaa, soeren, +1.603.891.aabb, Seema, juansequeda, [IPcaller], cygri
17:03:07 <mhausenblas> Zakim, who's here?
17:03:07 <Zakim> apparently SW_RDB2RDF()12:00PM has ended, mhausenblas
17:03:13 <Zakim> On IRC I see iv_an_ru, cygri, juansequeda, hhalpin, nunolopes, Zakim, RRSAgent, boris, mhausenblas, MacTed, LeeF, ericP, trackbot
17:03:25 <mhausenblas> thanks for joining in cygri 
17:03:39 <mhausenblas> best wishes to all at I-Semantics, cygri 
17:03:39 <ericP> ditto
17:03:49 <mhausenblas> RRSAgent, draft minutes
17:03:49 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
17:04:19 <mhausenblas> [adjourned]
17:05:20 <mhausenblas> ScribeOptions: -final -noEmbedDiagnostics
17:05:38 <mhausenblas> RRSAgent, draft  minutes
17:05:38 <RRSAgent> I have made the request to generate http://www.w3.org/2010/08/31-rdb2rdf-minutes.html mhausenblas
17:06:46 <mhausenblas> Zakim, bye
17:06:46 <Zakim> Zakim has left #rdb2rdf
17:06:49 <mhausenblas> RRSAgent, bye
17:06:50 <RRSAgent> I see 1 open action item saved in http://www.w3.org/2010/08/31-rdb2rdf-actions.rdf :
17:06:50 <RRSAgent> ACTION: Michael to send sample TC to the group [1]
17:06:50 <RRSAgent>   recorded in http://www.w3.org/2010/08/31-rdb2rdf-irc#T16-25-02