From which state was the last sitting US senator to have served during the presidencies of John F. Kennedy, Lyndon B. Johnson, and Richard Nixon?
Hawaii
Q30
entity
United States of America
US
Q9696
entity
John F. Kennedy
John F. Kennedy,
Q9640
entity
Lyndon B. Johnson
Lyndon B. Johnson,
Q9588
entity
Richard Nixon
Richard Nixon
Q782
Hawaii