<http://schema.org/about> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#AnnotationProperty> . <http://schema.org/about> <http://purl.org/dc/terms/source> <https://github.com/schemaorg/schemaorg/issues/1670> . <http://schema.org/about> <http://www.w3.org/2000/01/rdf-schema#comment> "The subject matter of the content." . <http://schema.org/about> <http://www.w3.org/2000/01/rdf-schema#label> "about" . <http://schema.org/about> <http://schema.org/category> "issue-1670" . <http://schema.org/about> <http://schema.org/inverseOf> <http://schema.org/subjectOf> . <http://schema.org/about> <http://schema.org/domainIncludes> <http://schema.org/CommunicateAction> . <http://schema.org/about> <http://schema.org/domainIncludes> <http://schema.org/CreativeWork> . <http://schema.org/about> <http://schema.org/domainIncludes> <http://schema.org/Event> . <http://schema.org/about> <http://schema.org/rangeIncludes> <http://schema.org/Thing> . <http://schema.org/mainEntity> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://schema.org/about> . <http://schema.org/subjectOf> <http://schema.org/inverseOf> <http://schema.org/about> .