user: Question: How old was the Conservative party member that left the house in 2001?
Columns: ['Born', 'Became oldest MP', 'Left House', 'Age on leaving', 'Died', 'Political Party']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['6 May 1866', '1945', '1950', '83 2', '24 April 1957', 'Liberal Party']
SQL:

assistant: SELECT "Age on leaving" FROM "Table" WHERE "Political Party" = 'Conservative' AND "Left House" = '2001';