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Samuel B. " Pony " Sager ( August 12 , 1848 – October 15 , 1928 ) was a Major League Baseball left fielder and shortstop for one month in 1871 .
 Pony, Sager, Major League Baseball
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pony, Sager, Major League Baseball