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Now , the agency estimates it can visit only 20 percent of the buildings at Isfahan , the oldest and largest part of Iran 's nuclear program , where , among other things , raw uranium is prepared for enrichment .
 location contains: Iran, Isfahan
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:  Iran, Isfahan 
Answer:
 location contains: Iran, Isfahan