DBpedia Ontology

DBpedia Ontology http://dbpedia.org/Ontology "is a shallow, cross-domain ontology, which has been manually created based on the most commonly used infoboxes within Wikipedia. The ontology currently covers over 170 classes which form a subsumption hierarchy and has 940 properties."

There is an overview of the class hierarchy at http://www4.wiwiss.fu-berlin.de/dbpedia/dev/ontology.htm

Top level classes i.e. Subclasses of owl:Thing can be viewed by running in following query in the Dbpedia SPARQL Webform http://dbpedia.org/snorql/

SELECT * WHERE {
?s rdfs:subClassOf owl:Thing
}

E.g. the Artist class is a sub class of the Person class.

<http://dbpedia.org/ontology/Artist> rdfs:subClassOf <http://dbpedia.org/ontology/Person> .