math_fact: 48426 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 48426 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: August 1st is the day in 1966 that Charles Whitman kills 16 people at The University of Texas at Austin before being killed by the police.