Problem: What are the most important words?
time to pack your bags and go visit one of the largest countries in the world .
Answer: time, visit, world

Problem: What are the most important words?
horses eating dry hay at the pasture
Answer: eat, hay, horse, pasture

Problem: What are the most important words?
fireworks explode over tourist attraction to celebrate holiday .
Answer:
attraction, celebrate, explode, firework