PMC:7253482 / 21226-21243 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T95182","span":{"begin":0,"end":1},"obj":"-COMMA-"},{"id":"T91428","span":{"begin":2,"end":4},"obj":"PRP"},{"id":"T10009","span":{"begin":5,"end":12},"obj":"VBD"},{"id":"T37828","span":{"begin":13,"end":16},"obj":"DT"}],"relations":[{"id":"R83297","pred":"arg2Of","subj":"T10009","obj":"T95182"},{"id":"R14505","pred":"arg1Of","subj":"T91428","obj":"T10009"}],"text":", we studied the "}