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IN the early 1960 's , the cellist Mstislav Rostropovich and the pianist Sviatoslav Richter , old friends from their conservatory days in Moscow , met several times in Austria to record Beethoven 's five sonatas for cello and piano .
 place of death: Mstislav Rostropovich, Moscow
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:  Mstislav Rostropovich, Moscow 
Answer:
 place of death: Mstislav Rostropovich, Moscow