455
A Dallas probate judge gave the Internal Revenue Service until Jan. 15 to prove its claim to proceeds from the sale of the gun Jack Ruby used to kill Lee Harvey Oswald after President John F. Kennedy was assassinated .
 Kill: Jack Ruby, Lee Harvey Oswald
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
 Entity Pairs:  Jack Ruby, Lee Harvey Oswald 
Answer:
 Kill: Jack Ruby, Lee Harvey Oswald