RDF's advantage: Mixing independent vocabularies
What do "Web pages for machines" look like? An example...
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns="http://xmlns.com/foaf/0.1/">
<Person>
<name>Dan Brickley</name>
<homepage dc:title="Dan's home page"
rdf:resource="http://rdfweb.org/people/danbri/"/>
<based_near geo:lat="51.47026" geo:long="-2.59466"/>
<rdfs:seeAlso rdf:resource="http://.../danbri-foaf.rdf"/>
<!-- more RDF here, using any RDF vocabularies -->
</Person>
</rdf:RDF>
see also: Kanzaki's examples