user: Question: Who was the away team when the home team was Sunderland?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Birmingham', '3–0', 'Watford', '14 February 1931']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Home team" = 'Sunderland';