804
North Korea has told American lawmakers it already has nuclear weapons and intends to build more , a senior U . S . congressman said Monday after returning from a trip to the communist state .
 congressman: artifact; state: origin
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:
 congressman: artifact; state: origin