user: Question: What is the Tie Number when Barnsley was the away team?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Bristol City', '2–1', 'Blackburn Rovers', '6 January 1951']
SQL:

assistant: SELECT "Tie no" FROM "Table" WHERE "Away team" = 'Barnsley';