PMC:1420271 / 272-280 JSONTXT

{"project":"craft-ca-core-dev","denotations":[{"id":"T640","span":{"begin":4,"end":6},"obj":"_FRAGMENT"}],"text":"em (ES) "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T716","span":{"begin":4,"end":6},"obj":"_FRAGMENT"}],"text":"em (ES) "}

{"project":"craft-sa-dev","denotations":[{"id":"T858","span":{"begin":3,"end":4},"obj":"-LRB-"},{"id":"T859","span":{"begin":4,"end":6},"obj":"NN"},{"id":"T860","span":{"begin":6,"end":7},"obj":"-RRB-"}],"text":"em (ES) "}