general_fact: 90210 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 90210 is an unremarkable number.
trivia: 90210 is an unremarkable number.
historical_date: December 26th is the day in 1997 that the Soufriere Hills volcano on the island of Montserrat explodes, creating a small tsunami offshore.