general_fact: 245 is the number of Jewish singers who returned from captivity in Babylon in circa 538 BCE BC following the rise of Cyrus the Great and the Persian Empire.
math_fact: 245 is a stella octangula number.
trivia: 245 is the number of Jewish singers who returned from captivity in Babylon in circa 538 BCE BC following the rise of Cyrus the Great and the Persian Empire.
historical_date: September 1st is the day in 1897 that the Boston subway opens, becoming the first underground rapid transit system in North America.