Q: 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.
Passage: The United States blamed leftist hostage-takers Tuesday for what it said were "some casualties" suffered as Peruvian security forces ended the siege at the Japanese ambassador's residence in Lima. 
A:
What event has already finished?