21689
With surveillance cameras from the International Atomic Energy Agency installed , Iranian technicians at a facility outside Isfahan resumed the intricate process of converting uranium that Iran says is intended to yield energy but that the West worries is a precursor to the development of nuclear weapons .
 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