Find the top 3 wineries with the greatest number of wines made of white color grapes.
return wineries ;return wines of #1 ;return grapes of #2 ;return colors of #3 ;return #2 where #4 is  white ;return number of  #5 for each #1 ;return #1 where #6 is  top 3 greatest
['select', 'project', 'project', 'project', 'comparative', 'group', 'comparative']