Problem: What are the most important words?
He goes quietly over to the window and shuts it and draws the curtain.
Answer: curtain, draw, shut, window

Problem: What are the most important words?
aerial shot of the rotating windmills over the green wheat field
Answer: field, rotate, windmill

Problem: What are the most important words?
miniature of a passenger airplane flying on the map from north east .
Answer:
airplane, fly, map