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The idea of a family of comical monsters was first suggested to Universal Studios by animator Bob Clampett , who developed the idea from 1943 to 1945 as a series of cartoons .
 Universal Studios, Bob Clampett
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Universal Studios, Bob Clampett