PMC:7205724 / 277-286 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T39","span":{"begin":0,"end":3},"obj":"NN"},{"id":"T40","span":{"begin":4,"end":6},"obj":"IN"}],"relations":[{"id":"R35","pred":"arg1Of","subj":"T39","obj":"T40"}],"text":"use of co"}