9730
They have limited space travel capacity , and citizens who go to work in space come back with rumors about beings called Immortals , who apparently live forever and can travel light years in days , and have some kind of shadowy influence on their planetary government .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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