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Acrimonious family conflicts are a way of life for the Melnikovs , who have spent the past 20 years embroiled in recriminations and lawsuits over the house in question , the only private one built in the center of Moscow during the Soviet period and an internationally acclaimed Constructivist masterpiece by Mr. Melnikov 's father , the Soviet architect and painter Konstantin Melnikov .
 Konstantin Melnikov, Moscow; Konstantin Melnikov, Moscow
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:
 Konstantin Melnikov, Moscow; Konstantin Melnikov, Moscow