user: Question: What is the mintage for a location of Sion and a denomination of 00500 500 francs?
Columns: ['Location', 'Date', 'Denomination', 'Coinage metal', 'Mintage', 'KM number']
Types: ['text', 'real', 'text', 'text', 'real', 'text']
Sample row: ['Fribourg', 1934.0, '00005 5 francs', 'Silver', 40650.0, 'S18']
SQL:

assistant: SELECT "Mintage" FROM "Table" WHERE "Location" = 'Sion' AND "Denomination" = '00500 500 francs';