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

### Instruction:
What is the start of Offy engine and in 1972?

### Inputs:
table_name: table, columns: ['Year', 'Chassis', 'Engine', 'Start', 'Finish', 'Entrant']

### Response:
SELECT Start FROM table WHERE Engine = offy AND Year = 1972