PMC:7205724 / 69-78 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T10","span":{"begin":0,"end":3},"obj":"DT"},{"id":"T11","span":{"begin":4,"end":7},"obj":"NN"}],"relations":[{"id":"R9","pred":"arg1Of","subj":"T11","obj":"T10"}],"text":"the use o"}