dialogue: W: Look at that boy. He's in the tree, isn't he? M: Yes, I think so. How dangerous! W: We had better tell him to get down. M: Quite right. But be sure not to frighten him.
question: What's the danger?
choice: The tree's falling down. The boy's falling out of the tree. The woman's shouting.
answer: The boy's falling out of the tree.