PMC:1440874 / 4189-4190 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T979","span":{"begin":0,"end":1},"obj":"NN"}],"text":"A"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T639","span":{"begin":0,"end":1},"obj":"CHEBI_EXT:adenine_nucleobase_or_nucleoside_or_nucleotide_molecular_entity_or_group"}],"text":"A"}