Question: When was the stadium Wollongong Wolves Football Club plays at opened?
Related documents: [0]  [DOC] Wollongong Showground, known as WIN Stadium for sponsorship reasons, is a multi-purpose stadium located in Wollongong, Australia. The stadium was officially opened in 1911. From 1982 until 1998 it played host to every home match for the Illawarra Steelers NRL team, and is still the team's home ground in the lower grade competitions. It is now used as one home ground of the St George Illawarra Dragons rugby league side and Wollongong Wolves of the National Premier Leagues NSW. [END] 
[1]  [DOC] Wollongong Wolves Football Club is an Australian semi-professional football club based in Wollongong, in the Illawarra region of New South Wales. The club currently competes in the National Premier Leagues NSW, the second-tier of football in Australia. The club plays its home games out of WIN Stadium. The club has been successful throughout their history winning one continental championship, two national championships and two state championships. [END] 
Answer: 
1911
1911