Children's Health Exposure Analysis Resource	Pathway Ontology	Source
http://semanticscience.org/resource/SIO_001107	http://purl.obolibrary.org/obo/PW_0000001	LOOM
http://semanticscience.org/resource/SIO_010533	http://purl.obolibrary.org/obo/PW_0000004	LOOM