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Joe Elvin ( real name Joseph Peter Keegan ) ( 29 November 1862 – 3 March 1935 ) was a Cockney comedian and music hall entertainer and a Founder of the Grand Order of Water Rats , a show business charity .
 Joe Elvin, Grand Order of Water Rats
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joe Elvin, Grand Order of Water Rats