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

### Instruction:
What stage of the race was held on the course Reggio Calabria to Catanzaro?

### Inputs:
table_name: table, columns: ['Stage', 'Date', 'Course', 'Distance', 'Winner', 'Race Leader']

### Response:
SELECT Stage FROM table WHERE Course = reggio calabria to catanzaro