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Norlandair 's fleet consists of three de Havilland Canada DHC-6 Twin Otter s aircraft , including one it purchased from Air Greenland in 2011 .
 organization: Norlandair; organization: Air Greenland
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: Norlandair, Air Greenland 
Answer:
 organization: Norlandair; organization: Air Greenland