general_fact: 5121 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 5121 is an uninteresting number.
trivia: 5121 is an uninteresting number.
historical_date: January 7th is the day in 1980 that President Jimmy Carter authorizes legislation giving $1.5 billion in loans to bail out the Chrysler Corporation.