Problem: What are the most important words?
tall straight trunks of trees behind a bank of bluebells flowering in fresh green grass
Answer: bluebell, flower, trunk

Problem: What are the most important words?
A bathroom looks dark with a big light on.
Answer: bathroom, light, look

Problem: What are the most important words?
grass and flowers moving in the wind and blue sky with dramatic clouds near river
Answer:
cloud, grass, move, sky