1087
Some 70 people were arrested Saturday as demonstrators clashed with police at the end of a major peace rally here , as at least 200 , 000 anti - war protesters took to the streets across the United States and Canada .
 people: person; here: place
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: arrest jail 
  Option: person, agent, place 
Text: {0} 
Answer:
 people: person; here: place