If one image shows a pair of legs wearing black knee pads, and the other image shows a pair of legs with a long knee wrap on only the left-side leg.
return one image  ;return pair of legs in  #1 ;return knee  pads ;return #3 that are black ;return if  #2 are wearing #4 ;return other image  ;return pair of legs  in  #6 ;return knee  wrap ;return #8 that is long ;return left-side leg of #7 ;return if  #9 is on #10 ;return number of  #9 ;return if  #12 is equal to  one ;return if  both  #13 and #11 are true ;return if  both  #5 and #14 are true
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