Process Chemistry Ontology	BrainTeaser Ontology (BTO)	Source
https://w3id.org/brainteaser/ontology/schema/Precipitation	http://purl.obolibrary.org/obo/CHMO_0001688	LOOM
https://w3id.org/brainteaser/ontology/schema/Activity	http://purl.allotrope.org/ontologies/process#AFP_0003620	LOOM
http://www.wurvoc.org/vocabularies/om-1.8/Mass	http://purl.obolibrary.org/obo/PATO_0000125	LOOM