 Complete the following phrase:  Stade Vélodrome de Rocourt, also known as Stade Jules Georges, was a multi-use stadium in Liège, Belgium. It was initially used as the stadium of R.F.C. de Liège matches. It was closed in 1995. The capacity of the stadium was 40,000 spectators. The UCI Track Cycling World Championships were held on the velodrome on four occasions: 1950, 1957, 