PMC:509305 / 7345-7354 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T4508","span":{"begin":0,"end":3},"obj":"CD"},{"id":"T4509","span":{"begin":4,"end":5},"obj":"SYM"}],"relations":[{"id":"R1290","pred":"punct","subj":"T4509","obj":"T4508"}],"text":"129 × C57"}