PMC:1359071 / 233-243 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T555","span":{"begin":5,"end":9},"obj":"VBN"},{"id":"T564","span":{"begin":0,"end":4},"obj":"VBN"}],"relations":[{"id":"R25","pred":"auxpass","subj":"T564","obj":"T555"}],"text":"been used "}