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Saudi Arabia , which gets millions of visitors each year making their pilgrimage to Mecca , has ordered all young visitors from countries with polio cases to bring proof of vaccination and will vaccinate them again when they arrive , the World Health Organization announced yesterday .
 location contains: Saudi Arabia, Mecca
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, Mecca 
Answer:
 location contains: Saudi Arabia, Mecca