PMC:7253482 / 847-854 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T130","span":{"begin":1,"end":2},"obj":"-COMMA-"},{"id":"T131","span":{"begin":3,"end":6},"obj":"CC"}],"relations":[{"id":"R126","pred":"arg1Of","subj":"T131","obj":"T130"}],"text":"x, and "}