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.
One example is below.
Q: Tracy slept awkwardly on their new bed and was having some pain, so Tracy cracked her neck.
A: What did Tracy do with her neck?
Rationale: The question asked is relevant and can be directly answered by referring to the phrase "so Tracy cracked her neck" from the passage.
Q: Ariadne also notices that her crystal pendant , the one given to her by the girl , Serena , is vibrating and glowing slightly . The girls told her that the crystal was " sensitive to spirits " . As the party ascended the stairs , the pendant only grew brighter , indicating a high level of spirit activity . At the top of the stairs they found what remained of a once - lavishly appointed bedchamber .
A:
What's a possible reason the crystal pendant is vibrating and glowing ?