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Maynard Frank Wolfe ( Rube Goldberg Inventions ) praised Holtz as " the extraordinary collector conservator computer wizard and historian of cartoon art . "
 Rube Goldberg Inventions, Holtz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rube Goldberg Inventions, Holtz