general_fact: 6155 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6155 is a member of the Fibonacci-type sequence starting with 2 and 5.
trivia: 6155 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: November 6th is the day in 1986 that Sumburgh disaster – A British International Helicopters Boeing 234LR Chinook crashes 2.5 miles east of Sumburgh Airport killing 45 people.