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In 1919 he was sent to the Catholic University of Leuven in Belgium , where he was ordained to the priesthood on July 8 , 1923 .
 Catholic University of Leuven, Belgium
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Catholic University of Leuven, Belgium