math_fact: 974 is the number of multigraphs with 5 vertices and 10 edges.
trivia: 974 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: August 31st is the day in 1949 that the retreat of the Democratic Army of Greece in Albania after its defeat on Gramos mountain marks the end of the Greek Civil War.