general_fact: 911 is the number of days after September 11th that the Madrid Attack took place.
math_fact: 911 is the American emergency number.
trivia: 911 is the number of days after September 11th that the Madrid Attack took place.
historical_date: June 29th is the day in 1874 that Greek politician Charilaos Trikoupis publishes a manifesto in the Athens daily Kairoi entitled "Who's to Blame?.