PMC:1084331 / 171-184 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T278","span":{"begin":3,"end":10},"obj":"NNS"},{"id":"T282","span":{"begin":11,"end":13},"obj":"IN"}],"relations":[{"id":"R23","pred":"prep","subj":"T282","obj":"T278"}],"text":"on factors of"}