22013
Later Persian writers associate him with philosophy , portraying him at a symposium with figures such as Socrates , Plato and Aristotle , in search of immortality .
 Socrates, Plato, 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:
 Socrates, Plato, Aristotle