general_fact: 19984 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 19984 is an uninteresting number.
trivia: 19984 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: September 17th is the day in 1992 that an Iranian Kurdish leader and his two joiners are assassinated by political militants in Berlin, Germany.