general_fact: 4865 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4865 is a boring number.
trivia: 4865 is an unremarkable number.
historical_date: April 26th is the day in 1965 that a Rolling Stones concert in London, Ontario is shut down by police after 15 minutes due to rioting.