PMC:3320587 / 243-263 JSONTXT

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{"project":"bionlp-st-ge-2016-spacy-parsed","denotations":[{"id":"T541","span":{"begin":17,"end":19},"obj":"TO"},{"id":"T540","span":{"begin":5,"end":16},"obj":"VBZ"}],"relations":[{"id":"R294","pred":"prep","subj":"T541","obj":"T540"}],"text":"ents contributes to "}