Which statuses correspond to both cities that have a population over 1500 and cities that have a population lower than 500?
return cities  ;return populations of #1 ;return #1 where #2 is higher than 1500 ;return #1 where #2 is lower than 500 ;return statuses of both #3 and  #4
['select', 'project', 'comparative', 'comparative', 'intersection']