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

### Instruction:
what is the total number of coach where captain is grant welsh and win/loss is 5-15

### Inputs:
table_name: table, columns: ['Season', 'Position', 'Win/Loss', 'Coach', 'Captain', 'Dudley Tuckey Medal', 'Leading goalkicker']

### Response:
SELECT COUNT Coach FROM table WHERE Captain = Grant Welsh AND Win/Loss = 5-15