Question: DVB Bank SE is part of which second largest bank in Germany by asset size and the central institution for more than 1,000 co-operative banks and their 12,000 branch offices?
Sentence (from "DZ Bank"): DZ Bank AG is the second largest bank in Germany by asset size and the central institution for more than 1,000 co-operative banks and their 12,000 branch offices.
Relevant evidence: Yes