165860
1st Battalion , 12th Cavalry The Regiment returned to Texas to conduct border patrol duty in the Lower Rio Grande Valley .
 organization: 1st Battalion; organization: 12th Cavalry; organization: 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: 1st Battalion, 12th Cavalry, Regiment 
Answer:
 organization: 1st Battalion; organization: 12th Cavalry; organization: Regiment