If there are exactly 2 marmots and one of them is standing on its hind legs.
return marmots ;return hind legs of #1 ;return #1 standing on #2 ;return number of  #1 ;return number of  #3 ;return if  #4 is equal to  two ;return if  #5 is equal to  one ;return if  both  #6 and #7 are true
['select', 'project', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']