math_fact: 1898 is a value of n for which s(n) = f(n) + f(n-1) + f(n-2).
trivia: 1898 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: March 12th is the day in 1881 that Andrew Watson makes his Scotland debut as the world's first black international football player and captain.