question: If the left image contains no more than four baboons and does not contain any baby baboons.
#1 return left image 
#2 return baboons  in  #1 
#3 return number of  #2 
#4 return if  #3 is at most four 
#5 return #2 that are baby 
#6 return number of  #5 
#7 return if  #6 is equal to  zero 
#8 return if  both  #4 and #7 are true