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They delayed publication of their results until after Wu 's group was ready , and the two papers appeared back-to-back in the same physics journal .
 person: Wu
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: Wu 
Answer:
 person: Wu