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: ammonium carbonate, also known as baker's ammonia or sal volatile, is a chemical compound.

Answer: ammonium carbonate


Question: the division of moore is an australian electoral division in the state of western australia.

Answer: division of moore


Question: hans nowak (born 9 august, 1937) is a former german football player.

Answer:
hans nowak