Drug Database for Inborn Errors of Metabolism (DDIEM) Ontology
Ontology for Geography Markup Language (GML3.0)
Source
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#_Object
http://purl.obolibrary.org/obo/BFO_0000030
LOOM