math_fact: 4321 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 4321 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: October 30th is the day in 1980 that El Salvador and Honduras sign a peace treaty to put the border dispute fought over in 1969's Football War before the International Court of Justice.