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Numerous well-known scientists , such as Albert Einstein , Otto Hahn and Lise Meitner were frequent visitors .
 Albert Einstein, Otto Hahn, Lise Meitner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Albert Einstein, Otto Hahn, Lise Meitner