general_fact: 19706 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 19706 is an unremarkable number.
trivia: 19706 is an unremarkable number.
historical_date: December 13th is the day in 1967 that Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels.