1) The first sound film, "The Jazz Singer," was released in 1927 and marked the transition from silent movies to "talkies."

2) In Greek mythology, the Minotaur is a mythical creature with the head of a bull and the body of a man. It dwells in the labyrinth of King Minos of Crete and is eventually defeated by the hero Theseus. The Minotaur symbolizes the primal and monstrous nature that resides within human beings.

3) The first bank in the world, Banca Monte dei Paschi di Siena, was established in Italy in 1472 and is still in operation today.

4) The political spectrum often includes the terms "left" and "right," with left-leaning ideologies generally advocating for social equality and progressive policies, while right-leaning ideologies support traditional values and limited government intervention.