Problem: What are the most important words?
A dog in near a herd of sheep.
Answer: dog, herd, sheep

Problem: What are the most important words?
red flowers on a balcony with modern building and cloudy sky
Answer: building, flower, sky

Problem: What are the most important words?
stacked round hay bales in a field with blue sky and scattered clouds above
Answer:
bale, field, stack