passages.id: 1.0alpha7.train.1222.sent
passages.type: sentence
passages.text: Binding of  p53 and   Sp1  to their cognate sites is required for their functional cooperation.
coreferences.id: 1.0alpha7.train.1222.coref0
coreferences.entity_ids: 1.0alpha7.train.1222.ent0_0
coreferences.id: 1.0alpha7.train.1222.coref1
coreferences.entity_ids: 1.0alpha7.train.1222.ent1_0