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 input: Tracy slept awkwardly on their new bed and was having some pain, so Tracy cracked her neck.
Example output: What did Tracy do with her neck?
Example explanation: The question asked is relevant and can be directly answered by referring to the phrase "so Tracy cracked her neck" from the passage.
Q: Cate arrived home from Sydney late last night totally exhausted . WYD week had been absolutely full on . She did enjoy herself , thought was more than happy to come home as she said she was sick of the crowds of people by the end of the week , wanted her own space again , and was pleased to be going back to school this morning for a rest lol .
A:
What may have caused Cate to arrive home exhausted ?