Problem: What are the most important words?
a police helicopter was seen circling above the city as the hunt for the missing teen continues
Answer: circle, city, helicopter, miss

Problem: What are the most important words?
There is a painting by the fireplace in the living room.
Answer: fireplace, painting, room

Problem: What are the most important words?
publisher has named a city the third best city in the world to visit .
Answer:
name, visit, world