PMC:1255741 / 6449-6450 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T1656","span":{"begin":0,"end":1},"obj":"NN"}],"text":"R"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T2227","span":{"begin":0,"end":1},"obj":"CHEBI_SO_EXT:arginine"}],"text":"R"}