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: murray albert olmstead (september 4, 1926 – november 16, 2015) was a canadian professional ice hockey left winger.

Output: bert olmstead


Input: Consider Input: orathanadu taluk is a taluk of thanjavur district in the indian state of tamil nadu.

Output: orathanadu taluk


Input: Consider Input: xenophon (c. 430 – 354 bc), also known as xenophon of athens, was a greek historian, soldier, mercenary, philosopher and a contemporary and admirer of socrates.


Output: xenophon