PMC:340383 / 67-99 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T227","span":{"begin":1,"end":2},"obj":"sentence"},{"id":"T228","span":{"begin":12,"end":22},"obj":"sentence"},{"id":"T229","span":{"begin":12,"end":22},"obj":"NN"},{"id":"T231","span":{"begin":23,"end":25},"obj":"PRP"},{"id":"T233","span":{"begin":26,"end":30},"obj":"VBP"}],"text":"y\n\nAbstract\nBackground\nWe have r"}