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Availability::- use_module(library(semweb/rdf11)).
Source[nondet]rdf_has(?S, +P, ?O)
[nondet]rdf_has(?S, +P, ?O, -RealP)
Similar to rdf/3 and rdf/4, but P matches all predicates that are defined as an rdfs:subPropertyOf of P. This predicate also recognises the predicate properties inverse_of and symmetric. See rdf_set_predicate/2.
Availability::- use_module(library(semweb/rdf_db)).
Source[nondet]rdf_has(?Subject, +Predicate, ?Object, -RealPredicate)
Same as rdf_has/3, but RealPredicate is unified to the actual predicate that makes this relation true. RealPredicate must be Predicate or an rdfs:subPropertyOf Predicate. If an inverse match is found, RealPredicate is the term inverse_of(Pred).