457
Dr . Alan Woodward , chief of emergency services at Emerson Hospital in Concord , begged to differ .
 Concord, Emerson Hospital, Dr, Dr . Alan Woodward , chief of emergency services at Emerson Hospital in Concord, chief of emergency services at Emerson Hospital in Concord
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Concord, Emerson Hospital, Dr, Dr . Alan Woodward , chief of emergency services at Emerson Hospital in Concord, chief of emergency services at Emerson Hospital in Concord