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But in fact Gillette razors were expensive when they were first introduced , and the price only went down after his patents expired : it was his competitors who invented the razors-and-blades model .
 person: Gillette
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: Gillette 
Answer:
 person: Gillette