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He asked a doctor to give him medication for pain : then he found that what the doctor gave him was a B-vitamin elixir , which he proposed to duplicate with a few changes and market it to a mass consumer market ( Years later , reports arose saying that LeBlanc had offered the doctor a share of the business , but the medical man refused .
 person: LeBlanc
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: LeBlanc 
Answer:
 person: LeBlanc