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

### Instruction:
What was the constructor when the laps were larger than 54, and the time/retired was +1 lap on a grid of 20?

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

### Response:
SELECT Constructor FROM table WHERE Laps > 54 AND Time/Retired = +1 lap AND Grid = 20