passages.id: 1.0alpha7.train.399.sent
passages.type: sentence
passages.text:  Buffers contained 10  muM FAD; binding was carried out at 40  mM imidazole, washing at 60 mM, and elution at 400 mM for the first cycle and 300 mM for the second.  
coreferences.id: 1.0alpha7.train.399.coref0
coreferences.entity_ids: 1.0alpha7.train.399.ent0_0
coreferences.id: 1.0alpha7.train.399.coref1
coreferences.entity_ids: 1.0alpha7.train.399.ent1_0