Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Who was the constructor of the car that Jan Lammers made 7-14 rounds in?

### Inputs:
table_name: table, columns: ['Constructor', 'Chassis', 'Engine', 'Tyres', 'Driver', 'Rounds']

### Response:
SELECT Constructor FROM table WHERE Driver = jan lammers AND Rounds = 7-14