general_fact: 8536 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 8536 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 8536 is an unremarkable number.
historical_date: May 15th is the day in 1970 that Philip Lafayette Gibbs and James Earl Green are killed at Jackson State University by police during student protests.