general_fact: 6 is the number of strings on a standard guitar.
math_fact: 6 is the smallest number of distinct isosceles right triangles that will tile an isosceles right triangle.
trivia: 6 is the jersey number worn by the starting stand-off half/five-eighth in most rugby league competitions.
historical_date: January 6th is the day in 1910 that the Great White Fleet passes through the Suez Canal, the largest group of ships to pass through up to that time.