What is the nationality of the soccer player who was the head coach of the under-21 football team that has been playing since 1976?
Keld Bordinggaard:  He was the head coach of the Danish national under-21 team from July 2006 until the U21 European Championship in June 2011. Denmark national under-21 football team: The Denmark national under-21 football team has played since 1976 and is controlled by the Danish Football Association.
i don't know