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.

[EX Q]: Who sang on the banks of the river?
[EX A]: Who sang background on the 1959 song with lyrics on the banks of the river?

[EX Q]: How many core editions are there of windows server 2012?
[EX A]: How many 32 GB core editions are there of windows server 2012?

[EX Q]: Since when is puerto rico part of the us?
[EX A]:
Since when is puerto rico aquired by the us?