35681
During the Peninsula Campaign , he led his men at the Battle of White Oak Swamp and served with efficiency in the 2nd Manassas Campaign .
 organization: 2nd
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: 2nd 
Answer:
 organization: 2nd