CREATE TABLE GRAPES (GRAPE VARCHAR(255), Color VARCHAR(255)); CREATE TABLE WINE (Winery VARCHAR(255), GRAPE VARCHAR(255))
Find the top 3 wineries with the greatest number of wines made of white color grapes.
    
SQL: SELECT T2.Winery FROM GRAPES AS T1 JOIN WINE AS T2 ON T1.GRAPE = T2.GRAPE WHERE T1.Color = "White" GROUP BY T2.Winery ORDER BY COUNT(*) DESC LIMIT 3