Problem: What are the most important words?
residents observe us federal holiday across the county
Answer: county, holiday, resident

Problem: What are the most important words?
art by people is admired during the launch of their joint art exhibition on friday
Answer: admire, art, exhibition

Problem: What are the most important words?
A plate contains two hot dogs, potatoes, and an ear of corn.
Answer:
contain, corn, plate, potato