26888
He explained himself to the House Un-American Activities Committee , and his appearance had no obvious impact on his career , which at the time was primarily in the theatre .
 organization: House Un-American Activities Committee
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: House Un-American Activities Committee 
Answer:
 organization: House Un-American Activities Committee