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Robert Kennedy was shot by Sirhan Sirhan and mortally wounded shortly after midnight on June 5 , 1968 , after he had addressed a crowd of supporters gathered in the Ambassador Hotel to celebrate his election victory of the day before .
 Sirhan Sirhan, Robert Kennedy
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 Sirhan Sirhan, Robert Kennedy