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Tom C. Lubensky is the Christopher H. Browne Distinguished Professor at the University of Pennsylvania , where he was Mary Amanda Wood professor of physics ( 1998 – 2009 ) and chair of the Department of Physics and Astronomy .
 Tom, Lubensky, University of Pennsylvania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tom, Lubensky, University of Pennsylvania