Detailed Instructions: In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.
Q: Context: I am aboard septa train to Trenton. Train was hit by something and came to a stop. Moments later the Amtrak train that derailed passed us.— Alfred Price (@TheAlfredPrice) May 13, 2015 Answer: the amtrak train that derailed passed them
A:
what happened moments later