general_fact: 47951 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47951 is an uninteresting number.
trivia: 47951 is a boring number.
historical_date: April 14th is the day in 69 that Vitellius, commander of the Rhine armies, defeats Emperor Otho in the Battle of Bedriacum and seizes the throne.