user: Question: Which manufacturer has a Time/Retired of +15.665?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Simone Corsi', 'Aprilia', 19.0, '40:03.557', 3.0]
SQL:

assistant: SELECT "Manufacturer" FROM "Table" WHERE "Time/Retired" = '+15.665';