question: If each image contains exactly one canine-type animal, and the animals on the left and right have the same kind of fur markings.
#1 return images 
#2 return animals in  #1 
#3 return #2 that are canine-type 
#4 return number of  #3 for each  #1 
#5 return #1 where  #4 is equal to  one 
#6 return number of  #5 
#7 return number of  #1 
#8 return if  #6 is equal to  #7 
#9 return the  left image 
#10 return the  right image 
#11 return animal in  #9 
#12 return animal in  #10 
#13 return fur markings of #11 
#14 return fur markings of #12 
#15 return if  #13 are the  same as #14 
#16 return if  both  #8 and #15 are true