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Hoping to end mounting nationwide protests , President Carlos Mesa of Bolivia announced plans late Thursday for the election of a citizen assembly to write a new constitution and for a national referendum on greater regional autonomy .
 nationality: Carlos Mesa, Bolivia
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:  Carlos Mesa, Bolivia 
Answer:
 nationality: Carlos Mesa, Bolivia