Problem: What are the most important words?
Downstairs, someone punches buttons on the security system, enters the basement workroom, and eyes the iron man suits.
Answer: button, eye, punch, system, workroom

Problem: What are the most important words?
A first wrestler will win the match.
Answer: match, win, wrestler

Problem: What are the most important words?
the fact that jellyfish have survived without brains gives hope to many people
Answer:
brain, fact, give, jellyfish, survive