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When he received his black belt in shotokan karate , he decided it was time to move on to different martial arts , and began training Brazilian Jiu-jitsu and Muay Thai at Ottawa Academy of Martial Arts .
 Ottawa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ottawa