user: Question: what is the lowest vuelta wins when the rank is 19 and combo is more than 0?
Columns: ['Rank', 'Country', 'Jerseys', 'Vuelta Wins', 'Points', "Combo'", 'Different holders']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Spain', 631.0, 31.0, 15.0, 12.0, 85.0]
SQL:

assistant: SELECT MIN("Vuelta Wins") FROM "Table" WHERE "Rank" = '19' AND "Combo'" > 0.0;