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The airfield was constructed by the USAAF 38th Bomb Group in August 1942 as a satellite field for Charters Towers Airport , and later used by the Royal Australian Air Force during World War II as a maintenance base .
 location: Charters Towers; organization: Royal Australian Air Force
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Charters Towers, Royal Australian Air Force 
Answer:
 location: Charters Towers; organization: Royal Australian Air Force