Problem: What are the most important words?
a large domed building with tall minarets on a hill overlooking the city at night
Answer: building, city, night, overlook

Problem: What are the most important words?
tribute to the miners who lost their lives
Answer: life, lose, tribute

Problem: What are the most important words?
protesters yell during a protest against the election of politician
Answer:
election, politician, protester