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Yu earned a bachelor 's degree in mathematics in 1984 from Peking University , and went on to graduate studies in statistics at Berkeley , earning a masters degree in 1987 and 1 Ph.D. in 1990 .
 person: Yu; organization: Peking University; organization: Berkeley
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Yu; organization: Peking University; organization: Berkeley