PMC:7205724 / 351-394 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T50","span":{"begin":7,"end":15},"obj":"JJ"},{"id":"T51","span":{"begin":16,"end":22},"obj":"NNS"},{"id":"T52","span":{"begin":23,"end":28},"obj":"VBP"},{"id":"T53","span":{"begin":29,"end":31},"obj":"IN"},{"id":"T54","span":{"begin":32,"end":35},"obj":"DT"},{"id":"T55","span":{"begin":36,"end":39},"obj":"NN"},{"id":"T56","span":{"begin":40,"end":42},"obj":"IN"}],"relations":[{"id":"R46","pred":"arg1Of","subj":"T51","obj":"T50"},{"id":"R47","pred":"arg1Of","subj":"T51","obj":"T52"},{"id":"R48","pred":"arg1Of","subj":"T52","obj":"T53"},{"id":"R49","pred":"arg2Of","subj":"T55","obj":"T53"},{"id":"R50","pred":"arg1Of","subj":"T55","obj":"T54"},{"id":"R51","pred":"arg1Of","subj":"T55","obj":"T56"}],"text":"rolled clinical trials exist on the use of "}