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

### Instruction:
Which year had a transmission of Voith D863.4 and a Cummins ISM engine?

### Inputs:
table_name: table, columns: ['Fleet #', 'Year', 'Manufacture', 'Model', 'Length (ft)', 'Engine', 'Transmission']

### Response:
SELECT Year FROM table WHERE Transmission = Voith D863.4 AND Engine = Cummins ISM