70006
Lander 's Division , Army of the Potomac , to March 1862 .
 organization: Army of the Potomac
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: Army of the Potomac 
Answer:
 organization: Army of the Potomac