219461
History Starting in the 19th Century , statues of firemen who died in the line of duty were placed in municipal burial plots , which eventually led to placement of monuments in more accessible public places and often to commemorate various departments or events .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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