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After that initial success , booksellers showed more willingness to stock paperbacks , and the name " Penguin " became closely associated with the word " paperback " .
 person: Penguin
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: Penguin 
Answer:
 person: Penguin