2143
we know of one detention center , well over 7 , 000 iraqis held there and almost a thousand have been released .
 thousand: person; center: 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: release parole 
  Option: person, entity, place 
Text: {0} 
Answer:
 thousand: person; center: place