general_fact: 19926 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 19926 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 19926 is a boring number.
historical_date: July 21st is the day in 1919 that the dirigible Wingfoot Air Express crashes into the Illinois Trust and Savings Building in Chicago, killing 12 people.