Table: guelph_hockey_club
Columns: club
league
sport
established
championships

Question: Which Established has a League of ontario australian football league?
SQL: SELECT "established" FROM guelph_hockey_club WHERE "league" = 'ontario australian football league'

Question: Which Championships have a League of ontario australian football league?
SQL: SELECT "championships" FROM guelph_hockey_club WHERE "league" = 'ontario australian football league'

Question: Which Established has a Club of guelph rangers?
SQL: SELECT "established" FROM guelph_hockey_club WHERE "club" = 'guelph rangers'