5054
Meb Keflezighi becomes first American man to win Boston Marathon since 1983 . http://t.co/ERuwcHcGLt
 Meb Keflezighi, Boston
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Meb Keflezighi, Boston