363768
He had a long , hollow back that sagged , especially as he aged , but still had a fine head , lovely neck , sound legs , deep girth , and powerful hindquarters with wide hips , inherited from his sire .
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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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