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Following the withdrawal of Israeli troops from the northern town of Beit Hanoun late Sunday , police took up positions there and in the neighbouring town of Beit Lahiya , he said .
 town: origin; troops: artifact
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: transport 
  Option: victim, artifact, destination, place, origin, vehicle, agent 
Text: {0} 
Answer:
 town: origin; troops: artifact