752
Some 2 , 500 mainly university students formed a human chain in Japanese characters spelling out " No War " in Osaka on Sunday to protest against the ongoing US - led military campaign in Iraq .
 Osaka: place; students: 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: demonstrate 
  Option: entity, place 
Text: {0} 
Answer:
 Osaka: place; students: entity