user: Question: What are the nationalities of the player picked from Thunder Bay Flyers (USHL)
Columns: ['Pick', 'Player', 'Position', 'Nationality', 'NHL team', 'College/junior/club team']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [27.0, 'Rhett Warrener', 'Defence', 'Canada', 'Florida Panthers', 'Saskatoon Blades (WHL)']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "College/junior/club team" = 'Thunder Bay Flyers (USHL)';