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In 2004 , NHK ( Japanese public TV network ) produced a 39 episode anime series titled " Agatha Christie 's Great Detectives Poirot and Marple " , as well as a manga series under the same title released in 2005 .
 NHK
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NHK