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

### Instruction:
Gross MW of 220, and a Unit of kakrapar 1 involves what operation start?

### Inputs:
table_name: table, columns: ['Unit', 'Type', 'Gross MW', 'Construction start', 'Operation start']

### Response:
SELECT Operation start FROM table WHERE Gross MW = 220 AND Unit = kakrapar 1