PMC:7205724 / 364-382
Annnotations
LitCovid-sample-Enju
{"project":"LitCovid-sample-Enju","denotations":[{"id":"T51","span":{"begin":3,"end":9},"obj":"NNS"},{"id":"T52","span":{"begin":10,"end":15},"obj":"VBP"},{"id":"T53","span":{"begin":16,"end":18},"obj":"IN"}],"relations":[{"id":"R47","pred":"arg1Of","subj":"T51","obj":"T52"},{"id":"R48","pred":"arg1Of","subj":"T52","obj":"T53"}],"text":"al trials exist on"}