221390
During this time he published an extensive monograph with his research on the Maldivian ancestral identity , which includes not only legends , but also observations on folk religion , drawings of sail boats and samples of local art , among other ancient Maldivian traditions .
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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