user: Question: How many nationalities are listed for the player Glen Irwin?
Columns: ['Pick #', 'Player', 'Position', 'Nationality', 'NHL team', 'College/junior/club team']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [29.0, 'Rich Leduc', 'Centre', 'Canada', 'California Golden Seals', 'Trois-Rivières Draveurs (QMJHL)']
SQL:

assistant: SELECT COUNT("Nationality") FROM "Table" WHERE "Player" = 'Glen Irwin';