8750
Nuclear experts doubt that an aid denial would do much to slow the eventual completion of Arak , given the growing skill of Iranian engineers and Iran 's aggressive nuclear stance . ''
 location contains: Iran, Arak
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, Arak 
Answer:
 location contains: Iran, Arak