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.

Ex Input:
saint-marcel-en-marcillat is a commune.

Ex Output:
saint-marcel-en-marcillat


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

Ex Output:
capellen


Ex Input:
hirokazu ninomiya (二宮 洋一, ninomiya hirokazu, november 22, 1917 - march 7, 2000) was a japanese football player.

Ex Output:

hirokazu ninomiya