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.
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Question: the scrotum is the bag that holds the testicles (commonly called "balls") in male mammals.

Answer: scrotum


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

Answer: norio omura


Question: "i believe i can fly" is a song by r&b singer r. kelly.

Answer:
i believe i can fly