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Some , such as philosopher and bioethicist Peter Singer , argue that these results qualify them for " rights to survival and life " - rights which humans theoretically accord to all persons ( See great ape personhood ) .
 Peter Singer
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:
 Peter Singer