4197
In August 2010 the 86th  Airlift Wing  became a sister wing to Poland's 3rd Airlift Wing the Poles having purchased some C-130Es aircraft from the  United States  .
 country of headquarters: Airlift Wing, United States
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:
 country of headquarters: Airlift Wing, United States