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The park is in northwestern Nebraska south of Chadron , within Nebraska National Forest .
 location: Nebraska; location: Chadron; location: Nebraska
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: Nebraska, Chadron, Nebraska 
Answer:
 location: Nebraska; location: Chadron; location: Nebraska