Problem: What are the most important words?
Some friends eat pizza in the school library.
Answer: eat, friend, library, pizza

Problem: What are the most important words?
lower third deep red foliage rocking in the wind under a blue sky
Answer: foliage, rock, wind

Problem: What are the most important words?
Two long hot dogs witting on a bun with condiments on it
Answer:
bun, condiment, dog