PMC:7205724 / 66-79 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T10","span":{"begin":3,"end":6},"obj":"DT"},{"id":"T11","span":{"begin":7,"end":10},"obj":"NN"},{"id":"T12","span":{"begin":11,"end":13},"obj":"IN"}],"relations":[{"id":"R9","pred":"arg1Of","subj":"T11","obj":"T10"},{"id":"R10","pred":"arg1Of","subj":"T11","obj":"T12"}],"text":"or the use of"}