rdf_label:label_property(?Property)[multifile, cpacks(hooks)]
True if the value of Property can be used to (non-uniquely) describe an object to the user. This hook provides additional facts to label_property/1.
 label_property(?Property) is nondet[multifile, library(semweb/rdf_label)]
True if Property is used to represent labels. The default definition defines SKOS (prefLabel, altLabel, DC (title) and rdfs:label. This predicate is defined as multifile.