Task: Question Generation
Input (English): #1 return students 
#2 return #1 who  are  allergic to milk 
#3 return #1 who  are  allergic to cat 
#4 return #1 of  both #2 and  #3 
#5 return last names of  #4 
#6 return ages of  #4 
#7 return #5 ,  #6
Output (English): What are the last names and ages of the students who are allergic to milk and cat?