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

Example Input: Passage: Thunderstorms grow where ground temperatures are extremely high. Answer: extremely high
Example Output: Are thunderstorms more likely where the ground temperatures are extremely high or extremely low?

Example Input: Passage: The surface seismic waves do the most damage because they only travel along the surface of the ground. Answer: surface
Example Output: What type of seismic waves do the most damage?

Example Input: Passage: Thunderstorms are are known for their heavy rains and lightning. In strong thunderstorms, hail and high winds are also likely. Thunderstorms are very common. Worldwide, there are about 14 million of them each year! In the U. S. , they are most common and strongest in the Midwest. Answer: 14 million
Example Output:
About how many thunderstorms are there each year worldwide?