Composing Files

The Optional Axioms of Good Relations are not represented as part of the published GR ontology. The reason for this is that most of the optional axioms cannot be expressed in OWL, and the GR authors want GR to be an OWL ontology. But these rules can be expressed in languages that go beyond OWL. We want to leave the published GR ontology “pure” OWL, while having the non-OWL parts in another file. Most software languages have features for managing modularity of this sort, and OWL is no exception; it has language features for modularizing semantic models. These language features have no semantics for the model (they allow no new triples to be inferred), but they help us, as humans, to organize a model in a modular way.

owl:Ontology ...

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