general_fact: 49812 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 49812 is an uninteresting number.
trivia: 49812 is an uninteresting number.
historical_date: May 18th is the day in 1268 that the Principality of Antioch, a crusader state, falls to the Mamluk Sultan Baibars in the Battle of Antioch.