PMC:314463 / 288-300 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T199","span":{"begin":5,"end":12},"obj":"VBN"},{"id":"T210","span":{"begin":0,"end":4},"obj":"VBP"}],"relations":[{"id":"R35","pred":"aux","subj":"T210","obj":"T199"}],"text":"have studied"}