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

### Instruction:
What number with the opponent Fokker D.vii have with a time of 1655?

### Inputs:
table_name: table, columns: ['Number', 'Time', 'Aircraft', 'Opponent', 'Location']

### Response:
SELECT SUM Number FROM table WHERE Opponent = fokker d.vii AND Time = 1655