Randomized Controlled Trials Ontology	Ontology for Geography Markup Language (GML3.0)	Source
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#TimeInstant	http://www.w3.org/2006/time#Instant	LOOM
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#TimePosition	http://www.w3.org/2006/time#TimePosition	LOOM
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#TimeDuration	http://www.w3.org/2006/time#Duration	LOOM
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#TemporalPosition	http://www.w3.org/2006/time#TemporalPosition	LOOM
http://loki.cae.drexel.edu/~wbs/ontology/2004/09/ogc-gml#Category	http://www.owl-ontologies.com/RCTOntology.owl#Category	LOOM