general_fact: 81736 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 81736 is an uninteresting number.
trivia: 81736 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: October 14th is the day in 1913 that Senghenydd Colliery Disaster, the United Kingdom's worst coal mining accident, occurs, and it claims the lives of 439 miners.