Input (grade 12): Abraham Lincoln (February 12, 1809 - April 15, 1865) was the 16th President of the United States, serving from March 1861 until his assassination in April 1865.
Output (grade 9): Abraham Lincoln (February 12, 1809 - April 15, 1865) was the 16th President of the United States between 1861 and 1865.