Problem: What are the most important words?
a soldier is seen as she returns to her base after an operation to deliver supplies at their base
Answer: base, deliver, operation, return, soldier

Problem: What are the most important words?
autumn leaves of maple in the water
Answer: leave, maple, water

Problem: What are the most important words?
field of blooming sunflowers in a summer sunny day under the blue clear sky with white clouds
Answer:
bloom, field, sky, summer