It is a knowledge acquisition technique where instances
of ontologically defined concepts and relations are extracted
and classified from an information resource. It relies on (semi)
automatic methods to transform unstructured (e.g. corpora),
semi-structured (e.g.html pages, etc.) and structured data
sources (e.g. data bases) into instance data. Movie ontology is
populated with instances of actors, directors, etc. For example,
the class ‘Movie’ is populated with following instances: