user: Question: What constituency does the Conservative Darren Millar belong to?
Columns: ['Constituency', 'Conservative', 'Labour', 'Liberal Democrats', 'Plaid Cymru', 'Result']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Aberavon', 'TJ Morgan', 'David Rees', 'Helen Ceri Clarke', 'Paul Nicholls Jones', 'Labour HOLD']
SQL:

assistant: SELECT "Constituency" FROM "Table" WHERE "Conservative" = 'Darren Millar';