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Other areas , such as Guam , have also been hit hard ; Guam has lost over 60 % of its native bird taxa in the last 30 years , many of them due to the introduced brown tree snake .
 location: Guam; location: Guam
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: Guam, Guam 
Answer:
 location: Guam; location: Guam