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History The first operational unit to use Berteaux was the 310th Bombardment Group and its 379th , 380th , 381st and 428th Squadrons , flying B-25 Mitchell s. Elements of the group arrived in late December 1942 from Telergma Airfield , with Group HQ arriving on 1 January 1943 .
 organization: 310th Bombardment Group
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: 310th Bombardment Group 
Answer:
 organization: 310th Bombardment Group