PMC:549712 / 9477-9480 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T3025","span":{"begin":2,"end":3},"obj":"SYM"}],"text":"r -"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T2643","span":{"begin":2,"end":3},"obj":"SO_EXT:sequence_nullness_or_absence"}],"text":"r -"}