Which at glass has poison?

In this movie, the sultan is looking for a suitable man to marry his daughter and asks questions to the candidates. There are 3 questions in total, and who knows, all three of them will have the chance to marry the sultan's daughter. one of the questions is "Which glass has poison in it?" shaped. Which glass do you think is poisonous? The part between 12:00 and 17:00 is relevant to this question. If you wish, you can watch all or only these parts. I tried to add English subtitles as it is a foreign movie, I hope it worked. If not, try to turn on the English subtitle setting while you watch.

Which at glass has poison?
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