860
Al - Douri taught international law at Baghdad University for over 30 years before becoming a diplomat in 1999 , first at the United Nations in Geneva and since early 2001 at U . N . headquarters in New York .
 Al - Douri: person; United Nations: place; headquarters: place; U . N: entity
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:
 Al - Douri: person; United Nations: place; headquarters: place; U . N: entity