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Significant changes came in 1910 with the reform of the Roman Breviary by Pope Pius X. This revision modified the traditional psalm scheme so that , while all 150 psalms were used in the course of the week , these were said without repetition .
 person: Pius X.
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Pius X. 
Answer:
 person: Pius X.