Problem: What are the most important words?
aircraft parked in the hangar
Answer: aircraft, hangar, park

Problem: What are the most important words?
boy listening to the sea in a tiny seashell
Answer: listen, sea, seashell

Problem: What are the most important words?
A young woman uses an egg beater to mix the contents of a large Pyrex cup.
Answer:
beater, cup, mix