What are the names of all tracks that belong to the Rock genre and whose media type is MPEG?
return tracks ;return genres of  #1 ;return #1 where #2 is  Rock ;return media types of  #1 ;return #1 where #4 is  MPEG ;return #1 of  both #3 and  #5 ;return names of  #6
['select', 'project', 'comparative', 'project', 'comparative', 'intersection', 'project']