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

### Instruction:
What is the average Weight of the person who is 6'9"?

### Inputs:
table_name: table, columns: ['Name', 'Pos.', 'Height', 'Weight', 'Year', 'Hometown (Previous school)']

### Response:
SELECT AVG Weight FROM table WHERE Height = 6'9"