user: Question: Who was the winner in 2013?
Columns: ['Year', 'Stage', 'Start of stage', 'Distance (km)', 'Category', 'Stage winner', 'Yellow jersey']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2013.0, 15.0, 'Givors', '242.5', 'HC', 'Chris Froome ( GBR )', 'Chris Froome ( GBR )']
SQL:

assistant: SELECT "Stage winner" FROM "Table" WHERE "Year" = 2013.0;