PMC:7205724 / 276-287 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T39","span":{"begin":1,"end":4},"obj":"NN"},{"id":"T40","span":{"begin":5,"end":7},"obj":"IN"}],"relations":[{"id":"R35","pred":"arg1Of","subj":"T39","obj":"T40"}],"text":" use of cor"}