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

### Instruction:
What is the number of final position-tours Mariano Piccoli, who has more than 20 final position-giros, before 1999 has?

### Inputs:
table_name: table, columns: ['Rider', 'Year', 'Final Position - Giro', 'Final Position - Tour', 'Final Position - Vuelta']

### Response:
SELECT COUNT Final Position - Tour FROM table WHERE Final Position - Giro > 20 AND Rider = mariano piccoli AND Year < 1999