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thumb |  Saudi Aramco  headquarters complex Saudi Aramco ( ) officially the  Saudi Arabian Oil Company  is a Saudi Arabian national oil and natural gas company based in Dhahran Saudi Arabia .
 alternate names: Saudi Aramco, Saudi Arabian Oil Company
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:
 alternate names: Saudi Aramco, Saudi Arabian Oil Company