general_fact: 2188 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2188 is the 10^{th} Motzkin number.
trivia: 2188 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: December 27th is the day in 1927 that Show Boat, considered to be the first true American musical, opens at the Ziegfeld Theatre on Broadway.