general_fact: 16299 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 16299 is an unremarkable number.
trivia: 16299 is a boring number.
historical_date: August 15th is the day in 1843 that Tivoli Gardens, one of the oldest still intact amusement parks in the world, opens in Copenhagen, Denmark.