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 The tests have come amid growing concern over Iran 's nuclear program , and Aliasghar Soltanieh , Iran 's ambassador to the International Atomic Energy Agency , told the news agency ANSA that United Nations nuclear inspectors will arrive on Friday to visit sites that will include the Natanz uranium enrichment plant . 
 location contains: Iran, Natanz
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Iran, Natanz 
Answer:
 location contains: Iran, Natanz