general_fact: 6172 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6172 is an uninteresting number.
trivia: 6172 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: November 23rd is the day in 2005 that Ellen Johnson Sirleaf is elected president of Liberia and becomes the first woman to lead an African country.