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.
--------
Question: zirconium is a chemical elemental metal.

Answer: zirconium


Question: le theil-en-auge is a commune.

Answer: le theil-en-auge


Question: anton rubinstein (born vikhvatinets 28 november 1829; died petershof 20 november 1894) was a russian pianist and composer.

Answer:
anton rubinstein