Database: regional_sales
Question: List all the cities where Shawn Torres sells Audio products.
SQL: SELECT T FROM ( SELECT DISTINCT CASE  WHEN T4.`Product Name` = 'Audio' AND T3.`Sales Team` = 'Shawn Torres' THEN T1.`City Name` ELSE NULL END AS T FROM `Store Locations` T1 INNER JOIN `Sales Orders` T2 ON T2._StoreID = T1.StoreID INNER JOIN `Sales Team` T3 ON T3.SalesTeamID = T2._SalesTeamID INNER JOIN Products T4 ON T4.ProductID = T2._ProductID ) WHERE T IS NOT NULL