question: Show the names of phones that have total number of stocks bigger than 2000, in descending order of the total number of stocks.
#1 return phones 
#2 return stocks  of   #1 
#3 return number of  #2 for each #1 
#4 return #1 where #3 is  higher than 2000 
#5 return names of   #4 
#6 return stocks  of   #4 
#7 return number of  #6 for each #4 
#8 return #5 sorted by #7 in descending order