If one of the knee pads has a white logo on the bottom
return knee pads ;return bottom of #1 ;return logo on #2 ;return #3 that is white ;return #1 that has #4 ;return number of  #5 ;return if  #6 is equal to  one
['select', 'project', 'project', 'filter', 'filter', 'aggregate', 'boolean']