PMC:1448208 / 168-180 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T862","span":{"begin":2,"end":7},"obj":"NN"},{"id":"T864","span":{"begin":8,"end":10},"obj":"IN"}],"relations":[{"id":"R23","pred":"prep","subj":"T864","obj":"T862"}],"text":"n error of m"}