Given the task definition, example input & output, solve the new input case.
In this task, you're given a context passage. Your job is to generate relevant questions that can be answered by directly referring to the passage.
Example: Tracy slept awkwardly on their new bed and was having some pain, so Tracy cracked her neck.
Output: What did Tracy do with her neck?
The question asked is relevant and can be directly answered by referring to the phrase "so Tracy cracked her neck" from the passage.

New input case for you: Anything else about it , I haven't heard yet . No idea how it happened , especially if the house was actually vacant like my cousin said . My brother was home , and he said the whole house shook and stuff fell off of his bedroom shelf . And we're on the other side of town from all of this , so it must've been pretty huge .
Output:
Why are they concerned about it ?