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

### Instruction:
What is the average number of ties when goals against is less than 56 for Ottawa Hockey Club and the goals for is more than 47?

### Inputs:
table_name: table, columns: ['Team', 'Games Played', 'Wins', 'Losses', 'Ties', 'Goals For', 'Goals Against']

### Response:
SELECT AVG Ties FROM table WHERE Goals Against < 56 AND Team = ottawa hockey club AND Goals For > 47