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: doriva (born 28 may 1972) is a former brazilian football player.

Answer: doriva


Question: the bighorn sheep ("ovis canadensis") is a species of sheep.

Answer: bighorn sheep


Question: chogolisa is a 7665 m mountain in the karakoram range, in pakistan.

Answer:
chogolisa