general_fact: 4965 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4965 is an unremarkable number.
trivia: 4965 is an uninteresting number.
historical_date: August 4th is the day in 1693 that Date traditionally ascribed to Dom Perignon's invention of Champagne, although he actually did not have anything to do with sparkling wine.