Teacher:In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
Teacher: Now, understand the problem? Solve this instance: Article: George Bernard Shaw and Winston Churchill disliked each other. It is said that the playwright once sent Churchill two tickets for the opening night of one of his plays, together with a card, which said, "Bring a friend (if you have one)." Churchill, however, returned the tickets with a note, which said, "I shall be busy that evening. Please send me two tickets for the second night (if there is one)." There is no record of whether Shaw ever sent the tickets.
Answer: Churchill did not have any friend.
Student:
What was Shaw trying to say to Churchill on his card?