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Senator Ben Nelson of Nebraska , a Democrat who opposed the filibuster against Mr. Estrada , said he could understand his colleagues ' call for disclosure of the legal papers in this case because Judge Roberts had been selected for a seat on Supreme Court . ''
 place lived: Ben Nelson, Nebraska
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:  Ben Nelson, Nebraska 
Answer:
 place lived: Ben Nelson, Nebraska