PMC:1253828 / 37249-37250 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T11468","span":{"begin":0,"end":1},"obj":"NN"}],"text":"S"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T9751","span":{"begin":0,"end":1},"obj":"CHEBI_EXT:sulfur"}],"text":"S"}