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Co-creator Paul Germain , in an interview with Rugrats Online , explained that while Chuckie was originally a stand alone character , a father was later written into the show , and the mother was consciously decided to remain absent from the series .
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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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