PMC:1914394 / 644-658 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T723","span":{"begin":6,"end":12},"obj":"NN"},{"id":"T725","span":{"begin":13,"end":14},"obj":"-LRB-"}],"relations":[{"id":"R101","pred":"punct","subj":"T725","obj":"T723"}],"text":"ption factor ("}