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In 1996 he devoted all his time to wildlife photography and spent the following two years working on his first book , In Praise of Primates , which was published in ten languages .
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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:  
Answer:
 None