general_fact: 189 is the rank of Brazil in population density.
math_fact: 189 is a Kaprekar constant in base 2.
trivia: 189 is the number of irregular verbs in the English language (from "abide" to "write").
historical_date: July 7th is the day in 1915 that an International Railway trolley with an extreme overload of 157 passengers crashes near Queenston, Ontario, killing 15.