334825
In 1867 , " he entered the military service of Alexander II as a lieutenant in the czar 's infantry guard . " "
 person: Alexander
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: Alexander 
Answer:
 person: Alexander