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The 2005 Kazuo Ishiguro novel " Never Let Me Go " and the 2010 film adaption are set in an alternate history in which cloned humans are created for the sole purpose of providing organ donations to naturally born humans , despite the fact that they are fully sentient and self-aware .
 Kazuo Ishiguro, Never Let Me Go
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Kazuo Ishiguro, Never Let Me Go