CHEBI Integrated Role Ontology	XEML Environment Ontology	Source
http://purl.obolibrary.org/obo/XEO_00048	http://purl.obolibrary.org/obo/ENVO_00002006	LOOM
http://purl.obolibrary.org/obo/XEO_00122	http://purl.obolibrary.org/obo/ENVO_02500002	LOOM