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

### Instruction:
I want the control trailers for 1931 with builder of grcw

### Inputs:
table_name: table, columns: ['Year', 'Builder', 'Motors', 'Trailers', 'Control Trailers']

### Response:
SELECT Control Trailers FROM table WHERE Year = 1931 AND Builder = grcw