general_fact: 396 is the displacement in cubic inches of early Chevrolet Big-Block engines.
math_fact: 396 is the number of 3×3 sliding puzzle positions that require exactly 11 moves to solve starting with the hole in a corner.
trivia: 396 is the displacement in cubic inches of early Chevrolet Big-Block engines.
historical_date: January 30th is the day in 1889 that Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in Mayerling.