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Dustin Ryan Kellogg ( February 16 , 1993 - October 4 , 2011 ) was a professional baseball player in the Houston Astros minor league system .
 Houston Astros
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Houston Astros