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

### Instruction:
Who constructed the car with a grid under 15, 77 laps, and a Time/Retired of + 0.771?

### Inputs:
table_name: table, columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']

### Response:
SELECT Constructor FROM table WHERE Grid < 15 AND Laps = 77 AND Time/Retired = + 0.771