user: Question: What is the nationality of the player who was previously with the Detroit Pistons?
Columns: ['Player', 'Pos.', 'Nationality', 'Previous team', 'Years of NBA experience [a ]', 'Career with the franchise']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Dennis Awtrey Category:Articles with hCards', 'C', 'United States', 'Chicago Bulls', 4.0, '— [b ]']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Previous team" = 'Detroit Pistons';