PMC:1858683 / 8259-8282 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T4644","span":{"begin":12,"end":16},"obj":"VBN"},{"id":"T4643","span":{"begin":8,"end":11},"obj":"VBZ"},{"id":"T4642","span":{"begin":17,"end":21},"obj":"VBN"}],"relations":[{"id":"R1268","pred":"aux","subj":"T4643","obj":"T4642"},{"id":"R1269","pred":"auxpass","subj":"T4644","obj":"T4642"}],"text":"ization has been used p"}