4659
Meanwhile Wadsworth and the acting  Union  corps commander Abner Doubleday organized a force to recapture the railroad cut using Cutler's other two regiments and the  6th Wisconsin Volunteer Infantry Regiment  of the Iron Brigade .
 members: Union, 6th Wisconsin Volunteer Infantry Regiment
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 members: Union, 6th Wisconsin Volunteer Infantry Regiment