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He then attended Harvard Law School , receiving an LL.B . in 1937 .
 organization: Harvard Law School; organization: LL.B .
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: Harvard Law School, LL.B . 
Answer:
 organization: Harvard Law School; organization: LL.B .