general_fact: 66038 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 66038 is an unremarkable number.
trivia: 66038 is a boring number.
historical_date: October 20th is the day in 1944 that Liquid natural gas leaks from storage tanks in Cleveland, then explodes; the explosion and resulting fire level 30 blocks and kill 130.