Table: fa_cup_match_20
Columns: tie_no
home_team
score
away_team
attendance

Question: What is the score for the game in which Arsenal was the away team?
SQL: SELECT "score" FROM fa_cup_match_20 WHERE "away_team" = 'arsenal'

Question: What is the score for the tie number 15?
SQL: SELECT "score" FROM fa_cup_match_20 WHERE "tie_no" = '15'