Annotations schema as an OWL 'ontology' (download RDF/XML)
It is not necessary to use any OWL infrastructure in order to understand the text mining results (although it helps). To treat the annotations ontology as an RDF schema, simply load the W3C's OWL-in-RDFS adapter file http://www.w3.org/2002/07/owl. See "OWL Web Ontology Language Reference," section 1.7, for more information.