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Since 1969 , Ottawa has been the home of the National Arts Centre , a major performing-arts venue that houses four stages and is home to the National Arts Centre Orchestra , the Ottawa Symphony Orchestra and Opera Lyra Ottawa .
 Ottawa, National Arts Centre, National Arts Centre Orchestra, Ottawa Symphony Orchestra, Opera Lyra 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, National Arts Centre, National Arts Centre Orchestra, Ottawa Symphony Orchestra, Opera Lyra Ottawa