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The poem , a " song of mourning " , is found in two of the manuscripts of the " Anglo-Saxon Chronicle " .
 Anglo-Saxon Chronicle
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Anglo-Saxon Chronicle