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:
Who sang the theme song to scooby doo?
answer:
Who sang the theme song to the TV series Scooby Doo, Where Are You! from 1969-1970?


question:
Who played guitar on goodbye yellow brick road?
answer:
Who played bass guitar on the album goodbye yellow brick road?


question:
When is office 2019 going to be released?
answer:

When is office 2019 Commercial Preview for Windows 10 going to be released?