PMC:1064854 / 918-923 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T900","span":{"begin":2,"end":4},"obj":"NN"},{"id":"T901","span":{"begin":1,"end":2},"obj":"HYPH"},{"id":"T903","span":{"begin":4,"end":5},"obj":"SYM"}],"relations":[{"id":"R161","pred":"punct","subj":"T901","obj":"T900"},{"id":"R163","pred":"punct","subj":"T903","obj":"T900"}],"text":"C-1α−"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T686","span":{"begin":4,"end":5},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"C-1α−"}