Give me a list of cities whose temperature in Mar is lower than that in July and which have also served as host cities?
return cities ;return #1 that  have served as host cities ;return temperatures of #1 ;return #3 in Mar ;return #3 in July ;return #1 where #4 is  lower than #5 ;return #1 in both #2 and #6
['select', 'filter', 'project', 'filter', 'filter', 'comparative', 'intersection']