If one image features a pair of legs wearing knee pads, and the other image includes a white knee pad.
return one image  ;return pair of legs in  #1 ;return knee  pads in  #1 ;return if  #2 are wearing #3 ;return the  other image  ;return knee  pad in  #5 ;return if  #6 is white ;return if  both  #4 and #7 are true
['select', 'project', 'project', 'boolean', 'select', 'project', 'boolean', 'boolean']