user: Question: What is the previous team oF the United States player who had 2 NBA years and played the F position?
Columns: ['Pos.', 'Nationality', 'Previous team', 'NBA years [a ]', 'Career with the franchise [b ]']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['F', 'United States', 'Washington Wizards', 2.0, '2006']
SQL:

assistant: SELECT "Previous team" FROM "Table" WHERE "Nationality" = 'United States' AND "NBA years [a ]" = 2.0 AND "Pos." = 'F';