1825
I visited Ras Tanura because oil is no longer out of mind , thanks to record prices caused by refinery shortages and surging demand -- most notably in the United States and China -- which has strained the capacity of oil producers and especially Saudi Arabia , the largest exporter of all .
 location contains: Saudi Arabia, Ras Tanura
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Saudi Arabia, Ras Tanura 
Answer:
 location contains: Saudi Arabia, Ras Tanura