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.

Example Input: norio yoshimizu (吉水 法生, yoshimizu norio, born august 21, 1946) is a former japanese football player.
Example Output: norio yoshimizu

Example Input: gossliwil is a former municipality in the district bucheggberg, in the canton of solothurn, switzerland.
Example Output: gossliwil

Example Input: norio omura (小村 徳男, omura norio, born september 6, 1969) is a former japanese football player.
Example Output:
norio omura