Problem: What are the most important words?
checking out the beach by the hotel
Answer: beach, check, hotel

Problem: What are the most important words?
couple on a beach gazing out to sea
Answer: beach, couple, sea

Problem: What are the most important words?
Somebody is painting someone else's fingernails, and then applies an ornate decoration to the nail.
Answer:
apply, fingernail, nail, paint