question: What are the name and code of the location with the smallest number of documents?
#1 return locations 
#2 return documents in #1 
#3 return number of  #2 for each #1 
#4 return #1 where #3 is  lowest 
#5 return name of #4 
#6 return code of #4 
#7 return #5 ,  #6