272481
The concept resurfaced temporarily in the late 1980s , when it was postulated by Harve Bennett as a possible plotline for the movie that would become Star Trek VI : The Undiscovered Country , but was rejected in lieu of other projects by Roddenberry .
 Harve Bennett, Roddenberry
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harve Bennett, Roddenberry