1861
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  .
 country of headquarters: Saudi Aramco, Saudi Arabia
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:
 country of headquarters: Saudi Aramco, Saudi Arabia