If the jellyfish on the right is blue and has four tentacles.
return jellyfish ;return #1 that is on the  right ;return if  #2 is blue ;return tentacles of #2 ;return number of  #4 ;return if  #5 is equal to  four ;return if  both  #3 and #6 are true
['select', 'filter', 'boolean', 'project', 'aggregate', 'boolean', 'boolean']