question: If at least four phones are stacked on top of each other in at least one of the pictures.
#1 return pictures 
#2 return phones in  #1 
#3 return #2 that are stacked on top of each other 
#4 return number of  #3 for each  #1 
#5 return #1 where  #4 is at least four 
#6 return number of  #5 
#7 return if  #6 is at least one