instruction:
In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.
question:
When did the astros last play in the world series?
answer:
When did the Astros play in the World Series for the first time?


question:
Who sings backup on thank you led zeppelin?
answer:
Who sings backup on Thank You by Led Zeppelin and plays drums for the band?


question:
Who did the voice of salem on sabrina?
answer:

Who did the voice of salem on the 1996 sabrina TV series?