Q: In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.
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 .
Question: Why are they concerned about it ?
A:
The house shook and things fell off the shelves .