Problem: What are the most important words?
white clouds float quickly across the blue sky in the summer and sunny day
Answer: day, sky, summer

Problem: What are the most important words?
divers riding the current over the reef
Answer: current, diver, reef

Problem: What are the most important words?
mughal structure is a white marble mausoleum built by monarch in memory of his third wife
Answer:
build, mausoleum, monarch, wife