Problem: What are the most important words?
close up shot with a bee descending on a white flower to extract the pollen
Answer: bee, close, flower, shot

Problem: What are the most important words?
a lot of modern boats and yachts are moored at a pier of city
Answer: city, moor, yacht

Problem: What are the most important words?
singer performs in concert during festival
Answer:
concert, festival, perform, singer