general_fact: 48647 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 48647 is a boring number.
trivia: 48647 is a boring number.
historical_date: March 10th is the day in 1945 that the U.S. Army Air Force firebombs Tokyo, and the resulting firestorm kills more than 100,000 people, mostly civilians.