PMC:7253482 / 1971-1976 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T299","span":{"begin":0,"end":1},"obj":"-COMMA-"},{"id":"T300","span":{"begin":2,"end":5},"obj":"CC"}],"relations":[{"id":"R294","pred":"arg1Of","subj":"T300","obj":"T299"}],"text":", and"}