general_fact: 2974 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2974 is a value of n for which s(n) = s(n+1).
trivia: 2974 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: February 21st is the day in 1995 that Steve Fossett lands in Leader, Saskatchewan, Canada becoming the first person to make a solo flight across the Pacific Ocean in a balloon.