Problem: What are the most important words?
most of our time this weekend was spent with cute little kittens for the grand opening
Answer: kitten, spend, time

Problem: What are the most important words?
award winner drives automobile model during leg of the rally
Answer: drive, model, winner

Problem: What are the most important words?
cloud moving fast time lapse with a view of lake and mountain
Answer:
lake, lapse, mountain, move