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.

capellen is a town in the commune of mamer, in south-western luxembourg, 12 km west of luxembourg city.
capellen

dennis kearney (1847–1907) was an american politician who was himself an immigrant from ireland.
dennis kearney

deer are a group of even-toed ungulate mammals.

deer