If there are exactly six guinea pigs in the left image and some of them are eating.
return left image ;return guinea pigs of #1 ;return the  number of  #2 ;return if  #3 is equal to  six ;return #2 that are eating ;return the  number of  #5 ;return if  #6 is at least one ;return if  both  #4 and #7 is true
['select', 'project', 'aggregate', 'boolean', 'filter', 'aggregate', 'boolean', 'boolean']