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Twenty-four of them were returned to the camp , but Flight Lieutenant Lorne Welch and Pilot Officer Walter Morison were sent to Oflag IV-C at Colditz for attempting to steal an aircraft .
 Lorne Welch, Walter Morison, Colditz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lorne Welch, Walter Morison, Colditz