191024
In 1907 , he joined the Militia , and was commissioned in the 9th Light Horse Regiment in 1909 .
 organization: Light Horse Regiment
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: Light Horse Regiment 
Answer:
 organization: Light Horse Regiment