Complex sentence: The stadium replaced the city's previous main football stadium, also called Gamla Ullevi and is the home ground of three football clubs, GAIS, IFK Göteborg and Örgryte IS, and also the national stadium for the Sweden women's national football team.
Split into simpler sentences: The stadium replaced the city's previous main football stadium, also called Gamla Ullevi, as the home arena for three Gothenburg clubs, GAIS, IFK Göteborg and Örgryte IS. It also became the national stadium for the Sweden women's national football team.