general_fact: 47700 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47700 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 47700 is an uninteresting number.
historical_date: August 6th is the day in 1787 that Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia.