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

### Instruction:
Which the lowest Against has a Status of tour match, and a Venue of ravenhill , belfast?

### Inputs:
table_name: table, columns: ['Opposing Team', 'Against', 'Date', 'Venue', 'Status']

### Response:
SELECT MIN Against FROM table WHERE Status = tour match AND Venue = ravenhill , belfast