question: If a single primate is in the grass in each of the images.
#1 return primate 
#2 return grass 
#3 return #1 in  #2 
#4 return images 
#5 return the  number of  #3 for each  #4 
#6 return #4 where  #5 is equal to  one 
#7 return the  number of  #4 
#8 return the  number of  #6 
#9 return if  #7 is equal to  #8