Unique URI-s for Semantic Web Entailment Regimes

W3C has published a set of URI-s to uniquely identify Semantic Web entailment regimes. These URI-s are needed for the upcoming SPARQL and RIF specifications, but their usage can be more general and not bound to specific technologies.

The URI-s for the various entailment regimes are:

• Simple Entailment: http://www.w3.org/ns/entailment/Simple
• RDF Entailment: http://www.w3.org/ns/entailment/RDF
• RDFS Entailment: http://www.w3.org/ns/entailment/RDFS
• D Entailment: http://www.w3.org/ns/entailment/D
• OWL Entailment with Direct Semantics: http://www.w3.org/ns/entailment/OWL-Direct
• OWL Entailment with RDF Based Semantics: http://www.w3.org/ns/entailment/OWL-RDF-Based
• RIF Entailment: http://www.w3.org/ns/entailment/RIF

Each of these URI-s can return, depending on content negotiations, XHTML+RDFa, RDF/XML, or Turtle content; the URI-s above with html, rdf, or ttl suffixes, respectively, can also be used to get to those versions directly.