general_fact: 81702 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 81702 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 81702 is a boring number.
historical_date: September 10th is the day in 1932 that the New York City Subway's third competing subway system, the municipally-owned IND, is opened.