Show all the locations with at least two cinemas with capacity above 300.
return locations ;return cinemas in #1 ;return capacities of #2 ;return #2 where #3 is  higher than 300 ;return number of #4 for each #1 ;return #1 where #5 is  at least two
['select', 'project', 'project', 'comparative', 'group', 'comparative']