Question: Who lived longer, NAME_1 or Harry Vaughan
NAME_2?
Are follow up questions needed here: Yes.
Follow up: How old was NAME_1 when he died?
Intermediate answer: NAME_1 was 65 years old when he
died.
Follow up: How old was NAME_3 when he died?
Intermediate answer: NAME_3 was 69 years old when
he died.
So the final answer is: NAME_3
Question: Who was president of the U.S. when superconductivity
was discovered?
Are follow up questions needed here: