Task: Question Generation
Input (English): #1 return professors 
#2 return offices of #1 
#3 return #1 where #2 is  located in DRE 102 
#4 return last name of #3 
#5 return when  #3 were hired 
#6 return #4 , #5
Output (English): What is the last name of the professor whose office is located in DRE 102, and when were they hired?