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Aru has a small airport but no public electricity grid , although UNHCR was up until recently supplying electricity to Aru Town using electric generators .
 organization: UNHCR
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: UNHCR 
Answer:
 organization: UNHCR