71879
According to Henry David Thoreau , a law provided that each single man in a town must kill six of those birds and , as a punishment for not doing so , he could not marry until he had complied with the aforementioned design .
 Henry David Thoreau
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:
 Henry David Thoreau