Input (grade 13): John Fitzgerald "Jack" Kennedy (May 29, 1917 - November 22, 1963), often referred to by his initials JFK, was the 35th President of the United States, serving from 1961 until his assassination in 1963.
Output (grade 10): John Fitzgerald Kennedy (May 29, 1917 - November 22, 1963), also known as JFK, was the 35th president of the United States of America.