Task: Question Generation
Input (English): #1 return Si Jafa repeatedly sending tribute to Ming 
#2 return him possibly dying in  combat 
#3 return when  was  #1 
#4 return when  was  #2 
#5 return which is the  lowest of #3 ,  #4
Output (English): What event happened first, Si Jafa repeatedly sending tribute to Ming, or him possibly dying in combat?