Problem: What are the most important words?
Two elephants are picking up grass with their trunks
Answer: elephant, grass, pick, trunk

Problem: What are the most important words?
A little girl is sleeping on the floor of her bedroom.
Answer: bedroom, floor, sleep

Problem: What are the most important words?
a buyer looks at the fur of farmed fox at the fair .
Answer:
buyer, fair, farm, fox, fur