PMC:7205724 / 73-81 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T11","span":{"begin":0,"end":3},"obj":"NN"},{"id":"T12","span":{"begin":4,"end":6},"obj":"IN"}],"relations":[{"id":"R10","pred":"arg1Of","subj":"T11","obj":"T12"}],"text":"use of m"}