This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.
Example: Giraffes like Acacia leaves and hay, and they can consume 75 pounds of food a day.
Example solution: A giraffe can eat up to 75 pounds of Acacia leaves and hay daily.
Example explanation: Input and output sentence have same meaning in different words.

Problem: ryan figured that the emergency was better designed to with­stand a nuclear attack than to avoid one , and that , at the moment , seemed very strange .

Solution: ryan thought such a procedure was ideal for reading a nuclear attack , not for his prevention , which seemed odd at the moment .