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The Warren Commission 's central conclusion , that Mr Kennedy was killed by Lee Harvey Oswald acting alone , has been backed up by most serious inquiries since then , with the exception of a 1979 House of Representatives select committee chaired by Mr Louis Stokes , an Ohio Democrat , which found that a second gunman probably fired at Mr Kennedy and missed .
 Lee Harvey Oswald, Mr 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:
 Lee Harvey Oswald, Mr Kennedy