Table: cubs_1989_games
Columns: date
opponent
score
loss
save

Question: What is the score of the game on September 13 when the Expos were the opponent?
SQL: SELECT "score" FROM cubs_1989_games WHERE "opponent" = 'expos' AND "date" = 'september 13'

Question: Who was the opponent on the September 3 game?
SQL: SELECT "opponent" FROM cubs_1989_games WHERE "date" = 'september 3'

Question: What is the save of the game on September 15?
SQL: SELECT "save" FROM cubs_1989_games WHERE "date" = 'september 15'