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: bradley-bourbonnais community high school (or bbchs) is a four-year public high school located in bradley, illinois, usa.

Answer: bradley-bourbonnais community high school


Question: cerebral œdema (or cerebral edema) is a build-up of extra fluid in the brain.

Answer: cerebral edema


Question: the pan american games are a multi-sport event, held every four years between competitors from all nations of the americas.

Answer:
pan american games