user: Question: What stage of the race was held on the course Reggio Calabria to Catanzaro?
Columns: ['Stage', 'Date', 'Course', 'Distance', 'Winner', 'Race Leader']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1', '17 May', 'Messina to Catania', 'km (mi)', 'Michele Mara ( ITA )', 'Michele Mara ( ITA )']
SQL:

assistant: SELECT "Stage" FROM "Table" WHERE "Course" = 'Reggio Calabria to Catanzaro';