1259
He became the first Ummayid Caliph and two decades later , under the Caliphate of his son Yazid , Imam Hussein bin Ali ( grandson of Muhammed ) was killed by his armies at present day Karbala .
 He: person
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: start position 
  Option: person, entity, place 
Text: {0} 
Answer:
 He: person