Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Who was the away team that played Northampton Town at home with a tie number of replay?

### Inputs:
table_name: table, columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Attendance']

### Response:
SELECT Away team FROM table WHERE Tie no = replay AND Home team = northampton town