user: Question: What nationality is Demetris Nichols?
Columns: ['Round', 'Pick', 'Player', 'Position', 'Nationality', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 1.0, 'Greg Oden', 'Center', 'United States', 'Ohio State']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Player" = 'Demetris Nichols';