general_fact: 7941 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 7941 is an unremarkable number.
trivia: 7941 is an uninteresting number.
historical_date: September 27th is the day in 1605 that the armies of Sweden are defeated by the Polish–Lithuanian Commonwealth in the Battle of Kircholm.