PMC:1189074 / 932-942 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T218","span":{"begin":0,"end":5},"obj":"NNS"},{"id":"T219","span":{"begin":6,"end":8},"obj":"IN"}],"relations":[{"id":"R104","pred":"prep","subj":"T219","obj":"T218"}],"text":"roles of f"}