PMC:7205724 / 269-280 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T37","span":{"begin":1,"end":2},"obj":"PDT"},{"id":"T38","span":{"begin":4,"end":7},"obj":"DT"},{"id":"T39","span":{"begin":8,"end":11},"obj":"NN"}],"relations":[{"id":"R33","pred":"arg1Of","subj":"T39","obj":"T37"},{"id":"R34","pred":"arg1Of","subj":"T39","obj":"T38"}],"text":"\n• The use"}