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What does the web ontology language add to the triple format?

  • A.A query language for retrieving triples from a store
  • B.Access control determining who may read each triple
  • C.Formal semantics permitting inference over the graph
  • D.A compression scheme reducing the size of large graphs

Answer: C

OWL supplies a description logic semantics, so a reasoner can compute subsumption, detect inconsistency and infer class membership rather than merely retrieving stored edges. Querying is the role of a separate language, and compression and access control are engineering concerns. Layering inference on top of an interchange format, rather than building it in, is what allows the same data to be used by systems that reason and by systems that merely store.

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