Problem: What are the most important words?
The boat is traveling down the narrow canal.
Answer: boat, canal, travel

Problem: What are the most important words?
men on the forum to solve economic issues of our time and see problems in modern building .
Answer: building, forum, problem, solve, time

Problem: What are the most important words?
Two hotdogs with cheese and mustard on top of them.
Answer:
cheese, hotdog, top