question: If there are three dispensers filled with substances in each of the images.
#1 return dispensers 
#2 return substances 
#3 return #1 that are filled with #2 
#4 return images 
#5 return number of  #3 for each  #4 
#6 return #4 where  #5 is equal to  three 
#7 return number of  #4 
#8 return number of  #6 
#9 return if  #7 is equal to  #8