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Following the critical and commercial failure of Star Trek : Nemesis and the cancellation of the television series Star Trek : Enterprise , franchise executive producer Rick Berman and screenwriter Erik Jendresen wrote an unproduced film , titled Star Trek : The Beginning , which would take place after Enterprise .
 Rick Berman, Erik Jendresen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rick Berman, Erik Jendresen