PMC:7243768 / 1662-1680 JSONTXT

{"project":"2_test","denotations":[{"id":"32450165-32087122-66450996","span":{"begin":11,"end":12},"obj":"32087122"},{"id":"32450165-32221306-66450997","span":{"begin":13,"end":14},"obj":"32221306"}],"text":"an, China [1,2]. A"}