general_fact: 38 is the number of slots on an American Roulette wheel (0, 00, and 1 through 36; European roulette does not use the 00 slot and has only 37 slots).
math_fact: 38 is the sum of the squares of the first three primes.
trivia: 38 is the number of years it took the Israelites to travel from Kadesh Barnea to the Zered valley in Deuteronomy.
historical_date: February 7th is the day in 1819 that Sir Thomas Stamford Raffles leaves Singapore after just taking it over, leaving it in the hands of William Farquhar.