14906
 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: 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, Arak 
Answer:
 location contains: Iran, Arak