user: Question: What is the Nationality of the player named Yahaya, who has as App(L/C/E) of 0 (0/0/0)?
Columns: ['Nat.', 'Name', 'Since', 'App(L/C/E)', 'Goals(L/C/E)', 'Ends', 'Transfer fee', 'Notes']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['ITA', 'Sorrentino', '2005', '64 (50/3/11)', '0 (0/0/0)', 2010.0, '€100K', 'to Chievo']
SQL:

assistant: SELECT "Nat." FROM "Table" WHERE "App(L/C/E)" = '0 (0/0/0)' AND "Name" = 'Yahaya';