PMC:523229 / 58407-58410 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T13346","span":{"begin":0,"end":3},"obj":"NN"}],"text":"PFA"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T13076","span":{"begin":0,"end":3},"obj":"CHEBI_EXT:paraformaldehye"}],"text":"PFA"}