100730
While the units assigned to the 155th HBCT vary in length of service , the brigade itself dates back to April 1951 when it was organized as Headquarters Company 108th Armored Cavalry Regiment .
 organization: 155th; organization: Headquarters Company; organization: Cavalry 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: 155th, Headquarters Company, Cavalry Regiment 
Answer:
 organization: 155th; organization: Headquarters Company; organization: Cavalry Regiment