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As the biomechanical tattoo art style became increasingly popular , tattoo artists such as Guy Aitchison and Aaron Cain began designing their own original , biomechanical art , creating one of tattoo 's most popular contemporary tattoo art movements .
 person: Guy Aitchison
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: Guy Aitchison 
Answer:
 person: Guy Aitchison