If all images featuring kneepads include human legs.
return kneepads ;return human legs ;return images of #1 ;return images of #2 ;return images ;return #5 in  both  #3 and #4 ;return number of  #3 ;return number of  #6 ;return if  #7 is equal to  #8
['select', 'select', 'project', 'project', 'select', 'intersection', 'aggregate', 'aggregate', 'boolean']