Given a scientific passage and an answer, generate a question for the given answer.

Example Input: Passage: The atmosphere protects living things from the Sun's most harmful rays. Gases reflect or absorb the strongest rays of sunlight. Figure below models this role of the atmosphere. Answer: the atmosphere
Example Output: What is the name of the protective layer of gases that surrounds the earth and blocks harmful rays from the sun?

Example Input: Passage: Did you ever have a picnic ruined by a surprise rainstorm? People often complain when the weather forecast is wrong. But in fact, weather forecasts today are much more accurate than they were just 20 years ago. Scientists who study and forecast the weather are called meteorologists . How do they predict the weather?. Answer: meteorologists
Example Output: What do we call scientists who study and forecast the weather?

Example Input: Passage: Look at the rock layers pictured below ( Figure below ); they show a feature called Hutton's unconformity. The unconformity was discovered by James Hutton in the 1700s. Hutton saw that the lower rock layers are very old. The upper layers are much younger. There are no layers in between the ancient and recent layers. Hutton thought that the intermediate rock layers eroded away before the more recent rock layers were deposited. Answer: they eroded away
Example Output:
As per hutton's unconformity, what happened to the intermediate layers of rock?