Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
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Question: Which semi-aquatic carnivorous mammals belong to the genus `Lutra'?

Answer: otter


Question: What was the title of Kylie Minogue's tenth album, released in 2007?

Answer: x


Question: What form of carbon was first isolated by Dr Andire Geim and Kostya Novoselov of Manchester University - ts development earned them a Nobel Prize in 2010?

Answer:
graphene