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The Warren Commission later concluded that Oswald shot Kennedy from a sniper 's perch in the Texas Schoolbook Depository building on the edge of downtown Dallas .
 Oswald, 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:
 Oswald, Kennedy