general_fact: 83931 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 83931 is a boring number.
trivia: 83931 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: October 17th is the day in 1907 that Guglielmo Marconi's company begins the first commercial transatlantic wireless service between Glace Bay, Nova Scotia, Canada and Clifden, Ireland.