user: Question: What nationality has Jon Koncak as the player?
Columns: ['Player', 'Nationality', 'Position', 'Years in Orlando', 'School/Club Team']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Mario Kasun', 'Croatia', 'Center', '2004–2006', 'Gonzaga']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Player" = 'Jon Koncak';