Complex sentence: It also hosted speedway and a match at the 1966 World Cup, before the stadium was demolished in 1985,sx it is the only Olympic stadium to be demolished however Wembley Stadium was rebuilt.
Split into simpler sentences: It also hosted speedway and a match at the 1966 World Cup, before the stadium was demolished in 1985. It is the only UK Olympic stadium to be demolished, as Wembley Stadium was rebuilt.