PMC:548520 / 554-567 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T218","span":{"begin":1,"end":6},"obj":"VB"},{"id":"T219","span":{"begin":7,"end":9},"obj":"IN"},{"id":"T220","span":{"begin":10,"end":11},"obj":"DT"}],"relations":[{"id":"R91","pred":"prep","subj":"T219","obj":"T218"}],"text":" serve as a m"}