user: Question: What nation is the cyclist from team Discovery Channel?
Columns: ['Cyclist', 'Nation', 'Team', 'Time', 'UCI ProTour Points']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Christophe Moreau', 'France', 'AG2R Prévoyance', '29h 50\' 35"', 50.0]
SQL:

assistant: SELECT "Nation" FROM "Table" WHERE "Team" = 'Discovery Channel';