PMC:1087847 / 231-240 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T300","span":{"begin":4,"end":8},"obj":"NNS"},{"id":"T301","span":{"begin":3,"end":4},"obj":"HYPH"}],"relations":[{"id":"R42","pred":"punct","subj":"T301","obj":"T300"}],"text":"a2+-ions "}