general_fact: 2500 is the number of letters on a typical typed page of text.
math_fact: 2500 is a Tetranacci-like number starting from 1, 1, 1, and 1.
trivia: 2500 is the number of letters on a typical typed page of text.
historical_date: November 4th is the day in 1501 that Catherine of Aragon (later Henry VIII's first wife) meets Arthur Tudor, Henry VIII's older brother – they would later marry.