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Several hours later , dozens of Israeli tanks advanced into the northern Gaza Strip backed by helicopters which fired at least three rockets in the Jabaliya area , Palestinian security sources said .
 tanks: vehicle; Gaza Strip: destination
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:
 tanks: vehicle; Gaza Strip: destination