general_fact: 4938 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4938 is a boring number.
trivia: 4938 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: July 8th is the day in 1932 that the Dow Jones Industrial Average reaches its lowest level of the Great Depression, bottoming out at 41.22.