246685
Marc Edwards ( born 1964 ) is a civil engineering/environmental engineer and the Charles P. Lunsford Professor of Civil and Environmental Engineering at Virginia Tech .
 Marc Edwards, Environmental, Virginia Tech
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marc Edwards, Environmental, Virginia Tech