question: How many different nationalities registered in Bilbao have more than 10 people each?
#1 return Bilbao 
#2 return different registered nationalities of #1 
#3 return people of #2 
#4 return number of  #3 for each #2 
#5 return #2 where #4 is more than 10 
#6 return number of  #5