user: Question: How many nationalities are the pick 193?
Columns: ['Pick', 'Player', 'Position', 'Nationality', 'NHL team', 'College/junior/club team']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [183.0, 'Jason Boudrias', 'Forward', 'Canada', 'Florida Panthers', 'Laval Titan (QMJHL)']
SQL:

assistant: SELECT COUNT("Nationality") FROM "Table" WHERE "Pick" = 193.0;