Anthony and Barbara play the following game. First, Barbara selects a card from an ordinary set of 52 playing cards. Then, Anthony guesses which card Barbara selected. If he guesses correctly, Barbara pays him 100 euros. If he guesses incorrectly, Anthony pays Barbara 4 euros. To make the game a bit more interesting, Anthony is allowed to ask a yes/no question before he guesses, and Barbara has to answer his question truthfully. Which question is better: “Do you have a red card?” or “Do you have the Queen of hearts?”?