user: Question: Thomas De Gendt performed on what stage as aggressive rider?
Columns: ['Stage', 'Winner', 'General Classification', 'Mountains Classification', 'Sprint Classification', 'Young Rider Classification', 'Team Classification', 'Aggressive Rider']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Matthew Goss', 'Matthew Goss', 'Luke Roberts', 'Matthew Goss', 'Matthew Goss', 'Team Sky', 'Simon Clarke']
SQL:

assistant: SELECT "Stage" FROM "Table" WHERE "Aggressive Rider" = 'Thomas De Gendt';