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In 1982 Ken won an Emmy Award for Best Writing in a Comedy Series for the episode " Elegant Iggy " featuring Christopher Lloyd on Taxi and in 1989 he won an Emmy Award for producing the The Tracey Ullman Show .
 Ken, Christopher Lloyd
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ken, Christopher Lloyd