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China 's President Jiang Zemin offered his gratitude in a meeting on Monday with visiting Gabon President Omar Bongo , the official Xinhua news agency said .
 location: China; person: Jiang Zemin; person: Omar Bongo; organization: Xinhua; location: Gabon
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: China, Jiang Zemin, Omar Bongo, Xinhua, Gabon 
Answer:
 location: China; person: Jiang Zemin; person: Omar Bongo; organization: Xinhua; location: Gabon