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Hedderick was selected in the 1952 NBA Draft by the Boston Celtics after a collegiate career at Canisius .
 Hedderick, Boston Celtics, Canisius
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hedderick, Boston Celtics, Canisius