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

### Instruction:
How old was the conservative party member that left the house in 2001?

### Inputs:
table_name: table, columns: ['Born', 'Became oldest MP', 'Left House', 'Age on leaving', 'Died', 'Political Party']

### Response:
SELECT Age on leaving FROM table WHERE Political Party = conservative AND Left House = 2001