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For instance , if a hiker experiences a sudden snow storm , fresh clothes and fire starter may be used to keep warm , or the map and compass and headlamp will allow them to exit the wilderness quickly ; otherwise they might succumb to hypothermia and perhaps even death .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None