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]: Doc martin how many episodes in season 7?
[EX A]: How many episodes in series 7 of Doc Martin?

[EX Q]: Samsung galaxy s7 when did it come out?
[EX A]: When did the Samsung galaxy S7 and S7 Edge come out in Europe and North America?

[EX Q]: Who sings the original i'll keep holding on?
[EX A]:
Which band sings the original i'll keep holding on?