Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.
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Question: mylo xyloto is the fifth studio album by coldplay.

Answer: mylo xyloto


Question: a brinicle is a column of ice that forms in seawater.

Answer: brinicle


Question: berlin is the capital city of germany.

Answer:
berlin