15333
Born in Lowestoft  United Kingdom  David lived in many places including Yemen and Germany thanks to his father being in the  Royal Air Force  .
 country of headquarters: United Kingdom, Royal Air Force
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  United Kingdom, Royal Air Force 
Answer:
 country of headquarters: United Kingdom, Royal Air Force