Biological and Environmental Research Ontology	Material	Source
http://sweet.jpl.nasa.gov/2.3/matr.owl#GreenhouseGas	http://purl.obolibrary.org/obo/CHEBI_76413	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#Air	http://purl.obolibrary.org/obo/NCIT_C73434	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#Mixture	http://purl.obolibrary.org/obo/CHEBI_60004	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#Solution	http://purl.obolibrary.org/obo/CHEBI_75958	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#ChemicalSubstance	http://purl.obolibrary.org/obo/CHEBI_59999	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#Air	http://purl.obolibrary.org/obo/MESH_D000388	LOOM
http://sweet.jpl.nasa.gov/2.3/matr.owl#Air	http://purl.obolibrary.org/obo/ENVO_00002005	LOOM