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The Second Byrd Antarctic Expedition Medal was established by Act of Congress in 1936 to commemorate the Second Byrd Antarctic Expedition .
 Byrd Antarctic Expedition, Second Byrd Antarctic Expedition
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Byrd Antarctic Expedition, Second Byrd Antarctic Expedition