general_fact: 4587 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 4587 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 4587 is an unremarkable number.
historical_date: July 22nd is the day in 2002 that Israel kills Salah Shahade, the Commander-in-Chief of Hamas's military arm, the Izz ad-Din al-Qassam Brigades.