What are the names of colleges in LA that have more than 15,000 students and of colleges in AZ with less than 13,000 students?
return colleges  ;return #1 in LA ;return students  in #2 ;return number of  #3 for each #2 ;return #2 where #4 is  more than 15,000 ;return #1 in AZ ;return students  in #6 ;return number of #7 for each #6 ;return #6 where #8 is  less than 13,000 ;return #5 ,  #9 ;return names of  #10
['select', 'filter', 'project', 'group', 'comparative', 'filter', 'project', 'group', 'comparative', 'union', 'project']