PMC:7205724 / 366-384 JSONTXT

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    LitCovid-sample-Enju

    {"project":"LitCovid-sample-Enju","denotations":[{"id":"T51","span":{"begin":1,"end":7},"obj":"NNS"},{"id":"T52","span":{"begin":8,"end":13},"obj":"VBP"},{"id":"T53","span":{"begin":14,"end":16},"obj":"IN"}],"relations":[{"id":"R47","pred":"arg1Of","subj":"T51","obj":"T52"},{"id":"R48","pred":"arg1Of","subj":"T52","obj":"T53"}],"text":" trials exist on t"}