user: Question: What is the constructor of the driver Heinz-Harald Frentzen?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Michael Schumacher', 'Ferrari', '71', '1:33:51.562', '3']
SQL:

assistant: SELECT "Constructor" FROM "Table" WHERE "Driver" = 'Heinz-Harald Frentzen';