If each image features a single dog, and one dog looks rightward while the other is facing forward.
return images ;return dogs in  #1 ;return number of  #2 for each  #1 ;return #1 where  #3 is equal to  one ;return number of  #4 ;return number of  #1 ;return if  #5 is equal to  #6 ;return one image ;return dog  in  #8 ;return if  #9 looks rightward ;return the  other image ;return dog  in  #11 ;return if  #12 is facing forward ;return if  both  #10 and #13 are true ;return if  both  #7 and #14 are true
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