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Iran 's deputy representative to the United Nations , Majid Takht Ravanchi , made the allegations in a letter to U.N. Secretary-General Boutros Boutros-Ghali on Friday , the agency said .
 person: Boutros Boutros-Ghali; organization: United Nations; location: Iran; person: Majid Takht Ravanchi; organization: U.N.
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Boutros Boutros-Ghali, United Nations, Iran, Majid Takht Ravanchi, U.N. 
Answer:
 person: Boutros Boutros-Ghali; organization: United Nations; location: Iran; person: Majid Takht Ravanchi; organization: U.N.