user: Question: How many Ranks have ray pickrell as a Rider?
Columns: ['Rank', 'Rider', 'Team', 'Speed', 'Time']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Tony Jefferies', 'Triumph', '102.85mph', '1:06.02.0']
SQL:

assistant: SELECT COUNT("Rank") FROM "Table" WHERE "Rider" = 'ray pickrell';