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President  Mahmoud Ahmadinejad  warned Monday that  Iran  would retaliate strongly to any possible attack by the United States over Tehran's controversial nuclear programme .
 employee of: Mahmoud Ahmadinejad, Iran
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:
 employee of: Mahmoud Ahmadinejad, Iran