50551
William Green , head of the American Federation of Labor , was taken to the first camp to demonstrate that there would be no job training involved beyond simple manual labor .
 William Green, American Federation of Labor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 William Green, American Federation of Labor