127
He resigned on 2 July 2012 , shortly after it was revealed that his office had destroyed files connected to the National Socialist Underground , a neo-nazi terrorist group held responsible for a series of murders of immigrants .
 None
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