Who is John Fitzgerald "Jack" Kennedy?

John Fitzgerald Kennedy Born on 29 May 1917 in Brooklyn, Massachusetts and die on 22 November 1963 in Dallas. He's often referred to by his initials JFK.

He was the 35th President of the United States during two years from 1961 to 1963.

While the World War II:

After military service as commander of the Motor Torpedo Boats during World War II in the South Pacific, Kennedy represented Massachusetts's 11th Congressional District in the House of Representatives from 1947 to 1953 as a democrat. 

After that, he served in the american Senate from 1953 until 1960. Kennedy defeated Vice President and Republican candidate Richard Nixon in the 1960 Presidential Election. He was the youngest elected to the office, at the age of 43, the second-youngest President, after Theodore Roosevelt (26th President of the U.S.A).

Who is Ernest Hemingway ?

Ernest Miller Hemingway, born in 21 July 21 1899 and died in 2 July 1961, was an American author and journalist. His economical and understated style had a strong influence on 20th century fiction, while his life of adventure and his public image influenced later generations. 

Hemingway produced most of his work between 1920 and 1950. He won the Nobel Prize in Literature in 1954. He published seven novels, six short story collections, and two non-fiction works. Three novels, four collections of short stories, and three non-fiction works were published posthumously. Many of these are considered classics of American literature. 
Hemingway was raised in several cities before de first World War. While this wartime, he was a ambulance driver. In 1918, he was seriously wounded and returned home.

Between 1922 and 1945, he raised accross the world. In 1952, he went on safari to Africa where he was almost killed in two successive plane crashes that left him in pain or ill health for much of the rest of his life.

In 1959 he moved from Cuba to Ketchum, Idaho, where he committed suicide in the summer of 1961.