Yago

YAGO, a large ontology with high coverage and precision. YAGO has been automatically derived from Wikipedia and WordNet. It comprises entities and relations, and currently contains more than 1.7 million entities and 15 million facts. These include the taxonomic Is-A hierarchy as well as semantic relations between entities. The facts for YAGO have been extracted from the category system and the infoboxes of Wikipedia and have been combined with taxonomic relations from WordNet.

DBpedia uses Yago’s classification system to instantiate those DBpedia individuals. This means that all DBpedia individuals belong to at least (theoretically) one Yago class.