In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
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Question: Which is the new member of nato in 2017?

Answer: Montenegro


Question: When did brazil win their last world cup?

Answer: 30 June 2002


Question: When did the uk smoking ban came into force?

Answer:
July 1, 2007