user: Question: Who had the fastest lap where Joan Lascorz was the winner?
Columns: ['Date', 'Round', 'Circuit', 'Pole Position', 'Fastest Lap', 'Race Winner', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['23 February', 'Qatar', 'Losail', 'Fabien Foret', 'Fabien Foret', 'Broc Parkes', 'Report']
SQL:

assistant: SELECT "Fastest Lap" FROM "Table" WHERE "Race Winner" = 'Joan Lascorz';