Explanation:

- Abraham Lincoln: Known for the famous Gettysburg Address during the American Civil War. In this speech, he described democracy as "government of the people, by the people, for the people." This succinctly captures the essence of democratic governance.

- Thomas Jefferson: Author of the Declaration of Independence and a proponent of democracy. While he advocated for the people's rights, he didn't coin the Gettysburg phrase.

- George Washington: As the first President, he set many precedents and supported democratic principles but didn't phrase it in Lincoln's famous way.

- John F. Kennedy: Famous for inspiring quotes, but not for this specific democracy definition.