general_fact: 50764 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 50764 is an unremarkable number.
trivia: 50764 is an unremarkable number.
historical_date: December 26th is the day in 1941 that U.S. President Franklin D. Roosevelt signs a bill establishing the fourth Thursday in November as Thanksgiving Day in the United States.