math_fact: 2715 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 2715 is a boring number.
historical_date: June 7th is the day in 1989 that Surinam Airways Flight 764 crashes on approach to Paramaribo-Zanderij International Airport in Suriname due to pilot error, killing 176 of 187 aboard.