8350
The  United States Air Force  maintains a presence in the form of the Ohio Air National Guard's  121st Air Refueling Wing  the first Air National Guard unit to fly KC-135 Stratotankers .
 subsidiaries: United States Air Force, 121st Air Refueling Wing
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:
 subsidiaries: United States Air Force, 121st Air Refueling Wing