It is the 15th century. A ball was announced in the courtyard! It seemed to be in honor of the birthday of some important person at court. You were invited too. You came there in your most beautiful dress and beautiful hairdo. After delicious dishes, people went dancing in the hall where they ate. Couples of women and men were whirling to the beat of melodic music. Not everyone, of course, was dancing. For example, you, other ladies and three men were standing near the windows or tables talking, eating or just standing. You liked those three men. One of them seemed to play the role of a court defender, the second, if you are not mistaken, a court physician, and the third a court lithographer. The one that was the court protector, Michael, was serious and had a blue robe, the one that was the court physician, Raphael, was nice and wore a green robe, and the one that was the court lithographer, Gabriel, was polite and a little cheerful and also had a white and brown robe. Their names reminded you of archangels, but you didn't attach much importance to it. Although sometimes there were questions that came to your mind. For example, "If they are really archangels?" or "What are archangels doing here?" You looked at them for a few seconds, studying their beautiful body features, but as soon as they looked back at you, you immediately turned away, as if watching other couples dancing. At that time, the men were discussing something.