Problem: What are the most important words?
use a grid to organize your square foot garden and plant a variety of vegetables .
Answer: garden, plant, variety, vegetable

Problem: What are the most important words?
an impressive pair of topaz and diamond earrings
Answer: earring, pair, topaz

Problem: What are the most important words?
saturday night was not so dark with so much lightning brightening the skies over a city .
Answer:
city, lightning, night, sky