Task: Question Generation
Input (English): #1 return students 
#2 return allergy of  #1 
#3 return #1 where  #2 is  milk and cat 
#4 return age of  #3 
#5 return last name of  #3 
#6 return #4 ,   #5
Output (English): Find the last name and age of the student who has allergy to both milk and cat.