PMC:1540739 / 860-869 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T600","span":{"begin":0,"end":8},"obj":"NN"},{"id":"T602","span":{"begin":8,"end":9},"obj":"."}],"text":"exchange."}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T431","span":{"begin":0,"end":8},"obj":"SO_EXT:sequence_substitution_process"}],"text":"exchange."}