PMC:7205724 / 145-152 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T20","span":{"begin":2,"end":3},"obj":"-COMMA-"},{"id":"T21","span":{"begin":4,"end":7},"obj":"CC"}],"relations":[{"id":"R17","pred":"arg1Of","subj":"T21","obj":"T20"}],"text":"ns, and"}