PMC:7205724 / 3298-3303 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T527","span":{"begin":0,"end":1},"obj":"-COMMA-"},{"id":"T528","span":{"begin":2,"end":5},"obj":"CC"}],"relations":[{"id":"R522","pred":"arg1Of","subj":"T528","obj":"T527"}],"text":", and"}