user: Question: What is the number of finishes having a start of 15?
Columns: ['Year', 'Team', 'Manufacturer', 'Start', 'Finish']
Types: ['real', 'text', 'text', 'real', 'real']
Sample row: [1993.0, 'Hendrick Motorsports', 'Chevrolet', 3.0, 5.0]
SQL:

assistant: SELECT COUNT("Finish") FROM "Table" WHERE "Start" = 15.0;