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The name " baryon " , introduced by Abraham Pais , comes from the Greek word for " heavy " ( βαρύς , " barýs " ) , because , at the time of their naming , most known elementary particles had lower masses than the baryons .
 person: Abraham Pais
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: Abraham Pais 
Answer:
 person: Abraham Pais