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Observers from Human Rights Watch described a deadly and chaotic siege of Monrovia , with many very young fighters shooting " shiny toys " they had not been trained to use .
 organization: Human Rights Watch; location: Monrovia
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: Human Rights Watch, Monrovia 
Answer:
 organization: Human Rights Watch; location: Monrovia