passages.id: 1.0alpha7.train.712.sent
passages.type: sentence
passages.text: Presplicing complex A forms upon binding of the 17S  U2 snRNP to the  pre-mRNA ( 3).
coreferences.id: 1.0alpha7.train.712.coref0
coreferences.entity_ids: 1.0alpha7.train.712.ent0_0
coreferences.id: 1.0alpha7.train.712.coref1
coreferences.entity_ids: 1.0alpha7.train.712.ent1_0
coreferences.id: 1.0alpha7.train.712.coref2
coreferences.entity_ids: 1.0alpha7.train.712.ent2_0