user: Question: What is the Tie no of Hereford United's Away game?
Columns: ['Tie no', 'Home team', 'Score 1', 'Away team', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Coventry City', '3 – 1', 'Aldershot Town', '9,293']
SQL:

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