question: If one image shows a single black dog and the other shows a pair of brown dogs.
#1 return one image 
#2 return dog in  #1 
#3 return number of #2 
#4 return If #3 is  equal to one 
#5 return If #2 is  black 
#6 return If both  #4 and #5 are  true 
#7 return other image 
#8 return dogs in  #7 
#9 return #8 that are  brown 
#10 return number of #9 
#11 return If #10 is  equal to two 
#12 return If both  #6 and #11 are  true