coolidge, and madison. >> that's okay. >> washington, lincoln, coolidge, or madison? i'm going coolidge. >> i'm going with "c." >> it is coolidge. >> coolidge was the first president in 1923. first time it had been outside on the white house lawn. >> thank you, calvin. next question. >> all right, which president invited children to the white house for a christmas frolic complete with cotton snow balls. "a," bill clinton? >> he had many frolics at the white house. >> could have been that. >> "b," thomas jefferson. "c" john f. kennedy. or "d" andrew jackson. >> andrew jackson used cannon balls. >> "d." >> i chose kennedy, too. >> i'm going to go with kennedy. >> i'm a solid "d." >> elizabeth is right, "d." >> you know why i know that? i'd it in your book. >> you've done your research. >> and final question. >> final question, which animal did george washington have at his mount vernon home on