Task: Question Generation
Input (English): #1 return the  clash at Peritheorion 
#2 return the  regency concluding a further alliance with Bulgaria 
#3 return when  was  #1 
#4 return when  was  #2 
#5 return which is lowest of #3 ,  #4
Output (English): What happened first, the clash at Peritheorion or the regency concluding a further alliance with Bulgaria?