List the cities which have more than one airport and number of airports.
return cities ;return airports in #1 ;return number of  #2 for each  #1 ;return #1 where  #3 is higher than one ;return airports in #4 ;return number of  #5 for each  #1 ;return #4 ,  #6
['select', 'project', 'group', 'comparative', 'project', 'group', 'union']