Table: fa_cup_matches_8
Columns: tie_no
home_team
score
away_team
attendance

Question: What is the away team with West Ham United as the home team?
SQL: SELECT "away_team" FROM fa_cup_matches_8 WHERE "home_team" = 'west ham united'

Question: What is the attendance of tie no. 23?
SQL: SELECT "attendance" FROM fa_cup_matches_8 WHERE "tie_no" = '23'

Question: What is the attendance of the match with Carlisle united as the home team?
SQL: SELECT "attendance" FROM fa_cup_matches_8 WHERE "home_team" = 'carlisle united'