general_fact: 47618 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 47618 is an unremarkable number.
trivia: 47618 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: May 16th is the day in 1966 that the Communist Party of China issues the "May 16 Notice", marking the beginning of the Cultural Revolution.