general_fact: 5951 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 5951 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 5951 is an unremarkable number.
historical_date: April 16th is the day in 1847 that the accidental shooting of a Māori by an English sailor results in the opening of the Wanganui Campaign of the New Zealand land wars.