Q: Every commander in chief since Franklin Roosevelt has had both a library and a memoir, expect one. Can you name this president? 

A: John F. Kennedy doesn't have both a memoir and a presidential library.

Q:How many painting did Vincent Van Gogh sell his whole life?  

A:  He only sold 1 painting and that was to his brother.

Q:Abraham Lincoln once invented a device that did what? 

A: lifted riverboats over shallow water.

Q:How tall was Robert Pershing Wadlow, the tallest man in medical history for whom there is irrefutable evidence?  

A: When last measured on June 27, 1940, was found to be 8 ft 11.1 inches tall.