Problem: What are the most important words?
why buying the most expensive motorcycle on internet publishing and broadcasting and web search portals business saved me money
Answer: business, buy, money, save

Problem: What are the most important words?
doves sitting on the roof and flying slow motion
Answer: dove, roof, sit

Problem: What are the most important words?
slow motion of a racing car drifting the turn during a race
Answer:
car, race, turn