53682
The United States severed diplomatic ties with Iran after militant students attacked the United States Embassy in Tehran in 1979 and took its diplomats hostage .
 country of capital: Iran, Tehran; location contains: Iran, Tehran
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, Tehran; Iran, Tehran 
Answer:
 country of capital: Iran, Tehran; location contains: Iran, Tehran