math_fact: 9936 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 9936 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: March 15th is the day in 1986 that Hotel New World Disaster a 1 star hotel collapses in Singapore's Little India's district killing 33 people.