Cigarette Smoke Exposure Ontology	Randomized Controlled Trials Ontology	Source
http://www.owl-ontologies.com/RCTOntology.owl#Treatment	http://scai.fraunhofer.de/CSEO#Treatment	LOOM
http://www.w3.org/2006/time#Year	http://purl.obolibrary.org/obo/UO_0000036	LOOM