user: ### NOW ANSWER:
Question: Which rider had a speed of 104.630mph?
Columns: ['Rank', 'Rider', 'Team', 'Speed', 'Time']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Oliver Linsdell', '398cc Yamaha', '106.634mph', '1:03.41.33']
SQL:

assistant: SELECT "Rider" FROM "Table" WHERE "Speed" = '104.630mph';