PMC:1064854 / 351-354 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T787","span":{"begin":0,"end":1},"obj":"SYM"},{"id":"T788","span":{"begin":1,"end":2},"obj":"-RRB-"}],"text":"−) "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T656","span":{"begin":0,"end":1},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"−) "}