general_fact: 4830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4830 is an unremarkable number.
trivia: 4830 is an unremarkable number.
historical_date: March 22nd is the day in 1978 that Karl Wallenda of The Flying Wallendas dies after falling off a tight-rope between two hotels in San Juan, Puerto Rico.