general_fact: 1228 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 1228 is a structured pentagonal hexacontahedral number.
trivia: 1228 is a boring number.
historical_date: May 12th is the day in 1937 that George VI and Elizabeth Bowes-Lyon are crowned King and Queen of the United Kingdom of Great Britain and Northern Ireland.