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Engaging with questions surrounding the ontology of nonhuman animals , the ethics of animal slaughter and the difference between humans and other animals , the address has been seen as initiating a late " animal turn " in Derrida 's philosophy , although Derrida himself has said that his interest in animals is present in his earliest writings .
 Derrida, Derrida
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Derrida, Derrida