201987
He wrote the book Kulturbestrebungen des estnischen Volkes während eines Menschenalters ( 1869-1900 ) ( The cultural aspirations of the Estonian people during one generation ( 1869-1900 ) ) ( Reval : Cordes & Schenk , 1912 ) .
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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