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The earliest form cited in the " Oxford English Dictionary " ( from 1842 ) is " chipmonk " , but " chipmunk " appears in several books from the 1820 s and 1830 s .
 None
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:  
Answer:
 None