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

### Instruction:
what is the debut year for player terry fulton with games less than 51?

### Inputs:
table_name: table, columns: ['Debut year', 'Player', 'Date of birth', 'Games', 'Goals', 'Years at club']

### Response:
SELECT AVG Debut year FROM table WHERE Player = terry fulton AND Games < 51