TASK DEFINITION: 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.
PROBLEM: tatsuya kamohara (born 8 july 1983) is a japanese football player.

SOLUTION: tatsuya kamohara

PROBLEM: renty is a commune.

SOLUTION: renty

PROBLEM: 50000 quaoar is a trans-neptunian object and could be a dwarf planet.

SOLUTION:
50000 quaoar