107769
The history of stage fighting and mock combat can be traced to antiquity , with Aristotle quoted as noting that tragedy is conflict between people or indeed it may be traced to the origins of the human species and primate display behaviour .
 Aristotle, primate
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:
 Aristotle, primate