sentences:  The demonstration train DLR Number 11 was transported to London, where it was put into operation on the Docklands Light Railway.It served as the "Royal train", transporting the Queen and Prince Philip on the formal opening of the DLR.In 1991, DLR Number 11 was the first of the P86 fleet to be sold to the City of Essen, Germany, where it is in service today on the Essen Stadtbahn.