general_fact: 47554 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47554 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 47554 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: March 13th is the day in 1997 that the Phoenix lights are seen over Phoenix, Arizona by hundreds of people, and by millions on television.