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

### Instruction:
How many entries are there for vote when the air date was 15 november 1997?

### Inputs:
table_name: table, columns: ['Air date', 'Reward', 'Immunity', 'Eliminated', 'Vote', 'Finish']

### Response:
SELECT COUNT Vote FROM table WHERE Air date = 15 November 1997