If at least one image in the set contains exactly four kneepads, with no lettering on them or brand names.
return kneepads ;return #1 with lettering on ;return #1 besides  #2 ;return #1 with brand names on ;return #3 besides  #4 ;return images ;return number of  #5 for each  #6 ;return #6 where  #7 is equal to  four ;return number of  #8 ;return if  #9 is at least one
['select', 'filter', 'discard', 'filter', 'discard', 'select', 'group', 'comparative', 'aggregate', 'boolean']