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A3 Netanyahu to Challenge Sharon Benjamin Netanyahu , left , a former prime minister of Israel , announced that he intended to challenge the current prime minister , Ariel Sharon , as leader of the ruling Likud party , a move that threatened the coalition government and increased the likelihood of early elections .
 nationality: Ariel Sharon, Israel
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:  Ariel Sharon, Israel 
Answer:
 nationality: Ariel Sharon, Israel