In this task, a passage will be given and the goal is to generate a question about temporal relations based on that passage. A temporal relation describes the relation between two things with respect to time e.g., something happens/starts/terminates/... immediately/shortly/usually/... before/after/during/... something else.
Your question should include an event, or ask about an event, and should not be a yes/no question.
Q: Passage: Prosecutors had accused the defendant of agreeing to store a cardboard box for a friend, who was tried separately, but failing to ask what it contained. Prosecutors said it contained explosives later used in the embassy attack.
A:
What event has already finished?