If there are two pizza and none of them are in a cardboard box.
return pizza ;return box ;return #2 that is cardboard ;return #1 in  #3 ;return number of  #1 ;return number of  #4 ;return if  #5 is equal to  two ;return if  #6 is equal to  zero ;return if  both  #7 and #8 are true
['select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']