user: Question: What was the constructor for the fastest Nelson Piquet?
Columns: ['Race', 'Date', 'Location', 'Pole Position', 'Fastest Lap', 'Race Winner', 'Constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Argentine Grand Prix', '13 January', 'Buenos Aires', 'Alan Jones', 'Alan Jones', 'Alan Jones', 'Williams - Ford', 'Report']
SQL:

assistant: SELECT "Constructor" FROM "Table" WHERE "Fastest Lap" = 'Nelson Piquet';