user: Question: What nationality is Barry Duench?
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/Junior/Club Team (League)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Kevin McCarthy', 'Defense', 'Canada', 'Winnipeg Monarchs ( WCHL )']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Player" = 'Barry Duench';