user: Question: What is Nationality, when NBA years [a ] is "1", and when Previous Team is "Seattle SuperSonics"?
Columns: ['Pick', 'Player', 'Pos.', 'Nationality', 'Team', 'Previous team', 'NBA years [a ]', 'Career with the franchise [b ]']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'B. J. Armstrong Category:Articles with hCards +', 'G', 'United States', 'Toronto Raptors', 'Chicago Bulls', '6', '— [c ]']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "NBA years [a ]" = '1' AND "Previous team" = 'Seattle SuperSonics';