user: Question: What is the Tie no listed for the Away team of Barnet?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Hereford United', '0 – 0', 'Yeovil Town', '1,859']
SQL:

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