44130
The offer was a significant departure in American foreign policy , given that Iran and the United States severed diplomatic ties after student hard-liners attacked the American Embassy in Tehran in 1979 and held 52 Americans hostage for 444 days .
 Iran, Tehran; Iran, Tehran
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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} 
Answer:
 Iran, Tehran; Iran, Tehran