3198
The officers were from the Headquarters and Headquarters Company of the  42nd Infantry Division  a New York Army National Guard unit from  Troy  New York ; it was deployed to Iraq in support of American operations in the Iraq War .
 city of headquarters: 42nd Infantry Division, Troy
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:
 city of headquarters: 42nd Infantry Division, Troy