math_fact: 20238 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 20238 is an uninteresting number.
historical_date: May 29th is the day in 1999 that Olusegun Obasanjo takes office as President of Nigeria, the first elected and civilian head of state in Nigeria after 16 years of military rule.