Problem: What are the most important words?
men loading goods in the port
Answer: good, load, port

Problem: What are the most important words?
a ray of sunlight breaking through dark clouds
Answer: break, cloud, ray, sunlight

Problem: What are the most important words?
A salad of greens, broccoli, oranges and nuts on a plate.
Answer:
broccoli, nut, plate, salad