If one pair of mittons has a visible animal design knitted in, and the other pair does not.
return pair of mittons ;return animal design ;return #1 that has #2 knitted in  ;return #1 besides  #3 ;return number of  #3 ;return number of  #4 ;return if  #5 is equal to  one ;return if  #6 is equal to  one ;return if  both  #7 and #8 are true
['select', 'select', 'filter', 'discard', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']