If each image shows a white dog standing without use of an aid or prosthetic, and the left image shows a three-legged dog on green grass.
return dog  ;return #1 that is white ;return aid ;return prosthetic ;return #2 standing without use of #3 ;return #2 standing without use of #4 ;return #5 , #6 ;return images of #7 ;return images ;return number of  #8 ;return number of  #9 ;return if  #10 is equal to  #11 ;return #1 that is three-legged ;return grass ;return #14 that is green ;return #13 on #15 ;return if  #16 is in  the  left image  ;return if  both  #12 and #17 are true
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