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In July 2008 , vandals toppled over 200 headstones in the cemetery , including that of Octavius Valentine Catto .
 Octavius Valentine Catto
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Octavius Valentine Catto