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

### Instruction:
What is the average number of wins for the person who coached from 1951 to 1956 and had less than 174 losses and less than 6 ties?

### Inputs:
table_name: table, columns: ['Coach', 'Years', 'Wins', 'Losses', 'Ties']

### Response:
SELECT AVG Wins FROM table WHERE Losses < 174 AND Years = 1951 to 1956 AND Ties < 6