Problem: What are the most important words?
mist hovering over a cold lake and trees
Answer: lake, mist, tree

Problem: What are the most important words?
shipping containers on a dock
Answer: container, dock, shipping

Problem: What are the most important words?
On the other side of the ship, crewmembers tip another lifeboat onto the deck below.
Answer:
deck, lifeboat, ship, side, tip