Task: Question Generation
Input (English): #1 return the  war between Wallachia and  Ottomans 
#2 return the  Battle of Mezőkeresztes 
#3 return when  was  #1 
#4 return when  was  #2 
#5 return which is lowest of #3 ,  #4
Output (English): What happened first, the war between Wallachia and Ottomans or the Battle of Mezőkeresztes?