 Complete the following phrase:  It was used mostly for football matches and hosted the home matches of S.L. Benfica and the Portugal national team. The stadium was opened on 1 December 1954 and it was able to hold an official maximum of 120,000 people, making it the largest stadium in Europe and the third largest in the world in terms of capacity. Some of the biggest attendances include a game against FC Porto with 135,000 people, the 198990 European Cup semi-final against Olympique de Marseille and the 1991 FIFA World Youth Championship final between Portugal and Brazil with 127,000 people in each game. It also hosted the 1992 European Cup Winners Cup Final, the second leg of the 1983 UEFA Cup Final, and the 