Semantic Web - slide "Semantic Web Languages"

each layer adds capabilities

...
DAML+OIL, OWL	+ computed classes, equivalence, etc.
RDF Schema	+ subclasses/subproperties
RDF	+ object graph structure
XML	syntax

Ontology languages
- DAML+OIL was developed by the Joint Committee consisting primarily of representatives from the DAML and EU Semantic Web programs
- the OWL Web Ontology Language was developed by the W3C Web Ontology (WebOnt) Working Group based on DAML+OIL
- the current differences between DAML+OIL and OWL are relatively minor