1920
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 a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 Kill: Jack Ruby, Lee Harvey Oswald