user: Question: Which constituency had the Conservative party win in 2003?
Columns: ['Rank', 'Constituency', 'Winning party 2003', 'Swing to gain', "SNP's place 2003", 'Result']
Types: ['real', 'text', 'text', 'real', 'text', 'text']
Sample row: [1.0, 'Galloway & Upper Nithsdale', 'Conservative', 0.17, '2nd', 'Con hold']
SQL:

assistant: SELECT "Constituency" FROM "Table" WHERE "Winning party 2003" = 'Conservative';