Table: k_league_club
Columns: club
head_coach
city
stadium
2007_season

Question: Which stadium has Seongnam Ilhwa Chunma?
SQL: SELECT "stadium" FROM k_league_club WHERE "club" = 'seongnam ilhwa chunma'

Question: What city is Gwang-Yang stadium in?
SQL: SELECT "city" FROM k_league_club WHERE "stadium" = 'gwang-yang stadium'

Question: Which stadium has FC Seoul?
SQL: SELECT "stadium" FROM k_league_club WHERE "club" = 'fc seoul'

Question: What stadium is in Seoul?
SQL: SELECT "stadium" FROM k_league_club WHERE "city" = 'seoul'