general_fact: 47159 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47159 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 47159 is an uninteresting number.
historical_date: February 11th is the day in 1790 that the Religious Society of Friends, also known as Quakers, petitions U.S. Congress for abolition of slavery.