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: language death is when a language stops being used as a first language (also called mother language or native language) and as a second language, which it then becomes an extinct language.

SOLUTION: language death

PROBLEM: yoshikazu goto (後藤 義一, goto yoshikazu, born february 20, 1964) is a japanese professional athlete.

SOLUTION: yoshikazu goto

PROBLEM: electrocution or electric shock is when electricity passes through something living.

SOLUTION:
electrocution