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For 14 years he helped run the Bill Gates - founded digital media firm Corbis , including serving as its CEO for ten years .
 person: Bill Gates; organization: Corbis
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: Bill Gates, Corbis 
Answer:
 person: Bill Gates; organization: Corbis