CHEMROF	Randomized Controlled Trials Ontology	Source
http://www.owl-ontologies.com/RCTOntology.owl#State	https://w3id.org/chemrof/State	LOOM
http://www.owl-ontologies.com/RCTOntology.owl#Category	https://w3id.org/chemrof/ClassificationLevelEnum#Category	LOOM