user: Question: What is City / State, when Winner is Mal Rose, and when Date is 20 Jul?
Columns: ['Date', 'Series', 'Circuit', 'City / State', 'Winner', 'Team']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['7 – 9 Mar', 'Super Touring GT-P Race', 'Albert Park', 'Melbourne , Victoria', 'Jim Richards', 'Volvo Cars Australia']
SQL:

assistant: SELECT "City / State" FROM "Table" WHERE "Winner" = 'Mal Rose' AND "Date" = '20 Jul';