If there are two restaurants will all of its seats empty.
return restaurants ;return seats of  #1 ;return #2 that are  empty ;return number of #2 for each #1 ;return number of #3 for each #1 ;return #1 where #5 is  equal to #4 ;return number of #6 ;return if  #7 is  equal to two
['select', 'project', 'filter', 'group', 'group', 'comparative', 'aggregate', 'boolean']