If there are 12 or more students wearing all-blue graduation gowns with white lapels.
return students ;return graduation gowns ;return #2 that are  all-blue ;return lapels of  #3 ;return #3 where #4 are  white ;return #1 wearing #5 ;return number of #6 ;return if  #7 is  at least 12
['select', 'select', 'filter', 'project', 'comparative', 'filter', 'aggregate', 'boolean']