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But as United Nations diplomats argue over potential sanctions against Iran for its nuclear ambitions , Russian officials have expressed reluctance to vote for the most stringent economic sanctions , partly owing to Moscow 's extensive trade relations with Tehran .
 country of capital: Iran, Tehran; location contains: Iran, Tehran
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 country of capital: Iran, Tehran; location contains: Iran, Tehran