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During this tour they were part of the  Cactus Air Force  at  Henderson Field  and also operated out of Espiritu Santo .
 city of headquarters: Cactus Air Force, Henderson Field
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: Cactus Air Force, Henderson Field