URL ONTOLOGY	Early Pregnancy Ontology	Source
https://bioportal.bioontology.org/ontologies/URL/#Body	http://www.semanticweb.org/ontologies/2009/3/ontoDPN.owl#OPPIO_a000203	LOOM
https://bioportal.bioontology.org/ontologies/URL/#HEAD	http://www.semanticweb.org/ontologies/2009/3/ontoDPN.owl#OPPIO_a000246	LOOM
https://bioportal.bioontology.org/ontologies/URL/#Value	http://www.semanticweb.org/ontologies/epo.owl#Value	LOOM