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The subspecies is pre-eminently threatened by habitat loss , degradation and fragmentation ; over 69 % of potential elephant habitat has been lost within the last 25 years .
 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