caption: The image shows an open book with a painting of a man on horseback in front of a castle, surrounded by a group of people on horses. The painting is accompanied by text, likely from a medieval manuscript, and the man on the horse is wearing a long coat and a hat, suggesting he is a knight. The castle in the background is tall and imposing, with a large tower and a moat surrounding it. The people on the horses are dressed in medieval clothing, and some of them are holding swords and shields. The sky is a deep blue, with stars twinkling in the night sky.