Which of President Joe Biden's wives did not live to the age of 31?
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Joe Biden was a successful candidate in the 1972 United States Senate election in Delaware.
Joe Biden was a participant in the 1972 United States Senate election in Delaware in which he was also a participant .
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden was a successful candidate in the [unused1]1972 United States Senate election in Delaware                [unused2] .
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden was a successful candidate in the 1972 United States Senate election in Delaware.
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden was a participant in the [unused1]1972 United States Senate election in Delaware                [unused2] in which he was also a participant .
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden was a participant in the 1972 United States Senate election in Delaware in which he was also a participant .
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden,0,Joe Biden,Joe Biden,candidacy in election,[unused1]1972 United States Senate election in Delaware[unused2],[unused1]1972 United States Senate election in Delaware[unused2],successful candidate,Joe Biden,[unused1]1972 United States Senate election in Delaware[unused2],0,[unused1]1972 United States Senate election in Delaware[unused2]
Which of President Joe Biden's wives did not live to the age of 31?</s>Joe Biden,0,Joe Biden,Joe Biden,candidacy in election,1972 United States Senate election in Delaware,1972 United States Senate election in Delaware,successful candidate,Joe Biden,1972 United States Senate election in Delaware,0,1972 United States Senate election in Delaware