What are the shortest duration and lowest rating of songs grouped by genre and ordered by genre?
return songs ;return genre of #1 ;return rating of #1 ;return duration of #1 ;return #1 where #3 is  lowest for each #2 ;return #1 where #4 is  shortest for each #2 ;return #5 and #6 ;return #7 ordered by  #2
['select', 'project', 'project', 'project', 'group', 'group', 'union', 'sort']