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.

Input: Consider Input: srivilliputhur taluk is a taluk of virudhunagar district of the indian state of tamil nadu.

Output: srivilliputhur taluk

Input: Consider Input: kurt julius isselbacher (september 12, 1925 july 18, 2019) was a german-born american physician and gastroenterologist.

Output: kurt julius isselbacher

Input: Consider Input: the french civil aviation university (french: "ecole nationale de l'aviation civile"), also known as enac, is a french public aeronautical "grande ecole" created the 28th of august 1949 and located at biscarosse, carcassonne, castelnaudary, chateau-arnoux-saint-auban, grenoble, melun, montpellier, muret, saint-yan and toulouse, in france.
Output: french civil aviation university