user: Question: Who did the fastest lap with the race winner John Watson?
Columns: ['Rnd', 'Race', 'Date', 'Location', 'Pole Position', 'Fastest Lap', 'Race Winner', 'Constructor', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'United States Grand Prix West', '15 March', 'Long Beach', 'Riccardo Patrese', 'Alan Jones', 'Alan Jones', 'Williams - Ford', 'Report']
SQL:

assistant: SELECT "Fastest Lap" FROM "Table" WHERE "Race Winner" = 'John Watson';