general_fact: 1287 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 1287 is a boring number.
trivia: 1287 is an uninteresting number.
historical_date: July 10th is the day in 1966 that the Chicago Freedom Movement, led by Martin Luther King, Jr., holds a rally at Soldier Field in Chicago, Illinois.