Table: iowa_football_games
Columns: date
opponent
city
result
score

Question: What was the date of the game against Northwestern?
SQL: SELECT "date" FROM iowa_football_games WHERE "opponent" = 'northwestern'

Question: Who was the opponent when the city was Louisville?
SQL: SELECT "opponent" FROM iowa_football_games WHERE "city" = 'louisville'

Question: What was the score of the game against Minnesota?
SQL: SELECT "score" FROM iowa_football_games WHERE "opponent" = 'minnesota'