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: the wrigley building (400-410 north michigan avenue, near north side, chicago, illinois) is a skyscraper in chicago.

Answer: wrigley building


Question: migennes is a commune.

Answer: migennes


Question: roh hoe-chan (, 31 august 1956 – 23 july 2018) was a south korean politician.

Answer:
roh hoe-chan