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He 'd married , became friends with Long Branch owner Chalkey Beeson , and become associated with several notable gunmen , gamblers and lawmen of the day , to include Doc Holliday , Wyatt Earp , Bat Masterson , John Allen , as well as Levi Richardson .
 Chalkey Beeson, Doc Holliday, Wyatt Earp, Bat Masterson, Levi Richardson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Chalkey Beeson, Doc Holliday, Wyatt Earp, Bat Masterson, Levi Richardson