question: If there is a saxophone in each image.
#1 return saxophones 
#2 return images 
#3 return number of  #1 for each  #2 
#4 return #2 where  #3 is at least one 
#5 return number of  #4 
#6 return number of  #2 
#7 return if  #6 is equal to  #5