Process Chemistry 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#ChemicalSubstance	http://purl.allotrope.org/ontologies/material#AFM_0001097	LOOM