256558
He was master of the English High School of Boston from 1838 until 1869 .
 organization: English High School of Boston
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: English High School of Boston 
Answer:
 organization: English High School of Boston