general_fact: 28908 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 28908 is a boring number.
trivia: 28908 is an uninteresting number.
historical_date: February 22nd is the day in 1872 that the Prohibition Party holds its first national convention in Columbus, Ohio, nominating James Black as its presidential nominee.