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Whale ( / Kit ) is a 1970 Bulgarian satirical comedy film directed by Petar B. Vasilev and written by Cheremuhin .
 Bulgarian, Petar B. Vasilev
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bulgarian, Petar B. Vasilev