Enzyme Reaction Ontology for annotating Partial Information of chemical transformation	General Formal Ontology for Biology	Source
http://onto.eva.mpg.de/ontologies/gfo-bio.owl#Atom	http://reactionontology.org/piero/kcfs#atom	LOOM
http://onto.eva.mpg.de/ontologies/gfo-bio.owl#Molecule	http://reactionontology.org/piero/molecule	LOOM
http://www.onto-med.de/ontologies/gfo.owl#Process	http://reactionontology.org/piero/process	LOOM