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In a famous fragment , This fragment has sometimes been connected to a passage in Aristotle 's " Physics " where Aristotle refers to people who twisted wineskins and captured air in clepsydras to demonstrate that void does not exist .
 Aristotle, Aristotle
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Aristotle, Aristotle