user: Question: What is the nationality of Martin Lewis?
Columns: ['Player', 'Nationality', 'Position', 'Years in Toronto', 'School/Club Team']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Antonio Lang', 'United States', 'Guard-Forward', '1999-2000', 'Duke']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Player" = 'Martin Lewis';