user: Question: Which Nationality has a Previous team of New York Knicks, and more than 3 Years of NBA experience?
Columns: ['Player', 'Pos.', 'Nationality', 'Team', 'Previous team', 'Years of NBA experience [a ]', 'Career with the franchise [b ]']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Len Chappell Category:Articles with hCards +', 'F/C', 'United States', 'Milwaukee Bucks', 'Detroit Pistons', 6.0, '1968 – 1970']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Previous team" = 'New York Knicks' AND "Years of NBA experience [a ]" > 3.0;