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Soon after this experience , in 1997 , he wrote the essay " The Cathedral and the Bazaar " , detailing his thoughts on open-source software development and why it should be done as openly as possible ( the " bazaar " approach ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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