general_fact: 1186 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 1186 is the number of 11-iamonds.
trivia: 1186 is an uninteresting number.
historical_date: March 31st is the day in 1146 that Bernard of Clairvaux preaches his famous sermon in a field at Vézelay, urging the necessity of a Second Crusade.