Task: Question Decomposition
Input (English): question: Which address has both members younger than 30 and members older than 40?
Output (English): #1 return addresses 
#2 return members of  #1 
#3 return #1 where #2 are  younger than 30 
#4 return #1 where #2 are  older than 40 
#5 return #1 of  both #3 and  #4