math_fact: 2197 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 2197 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: January 5th is the day in 1993 that the oil tanker MV Braer runs aground on the coast of the Shetland Islands, spilling 84,700 tons of crude oil.