PMC:7205724 / 385-396 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T55","span":{"begin":2,"end":5},"obj":"NN"},{"id":"T56","span":{"begin":6,"end":8},"obj":"IN"}],"relations":[{"id":"R51","pred":"arg1Of","subj":"T55","obj":"T56"}],"text":"e use of co"}