SELECT ?title WHERE { ?? (rdfs:label|skos:prefLabel|schema:name) ?title . } Role

SELECT ?class WHERE { ?? (rdf:type|owl:type) ?class . } Class

SELECT ?description WHERE { ?? (rdfs:comment|schema:description) ?description . } Represents additional information about a relationship or property. For example a Role can be used to say that a 'member' role linking some SportsTeam to a player occurred during a particular time period. Or that a Person's 'actor' role in a Movie was for some particular characterName. Such properties can be attached to a Role entity, which is then associated with the main entities using ordinary properties like 'member' or 'actor'.\n\nSee also [blog post](https://blog.schema.org/2014/06/16/introducing-role/).