354
On 7 April 1911 he was sworn to secrecy by the Irish Republican Brotherhood .
 organization: Irish Republican Brotherhood
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: Irish Republican Brotherhood 
Answer:
 organization: Irish Republican Brotherhood