PMC:7205724 / 70-79 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T11","span":{"begin":3,"end":6},"obj":"NN"},{"id":"T12","span":{"begin":7,"end":9},"obj":"IN"}],"relations":[{"id":"R10","pred":"arg1Of","subj":"T11","obj":"T12"}],"text":"he use of"}