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On October 12th the Chairmen of Exxon Texaco Mobil and Chevron ( who made up the production company of Aramco in Saudi Arabia ) sent Chief of  Staff  Gen.  Alexander Haig  ( who later became Reagan's Secretary of State ) a memo warning against any increased aid to Israel by saying it would have a critical and adverse effect on our relations with the moderate Arab producing countries .
 None
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:
 NA: Staff, Alexander Haig