Prostate Cancer Ontology	GeoSpecies Ontology	Source
http://www.semanticweb.org/ontologies/2018/1/ProstateCancer.owl#Observation	http://rdf.geospecies.org/ont/geospecies#Observation	LOOM
http://www.semanticweb.org/ontologies/2018/1/ProstateCancer.owl#Observation_for_PSA-only_recurrences	http://rdf.geospecies.org/ont/geospecies#Observation	LOOM