Problem: What are the most important words?
A woman drinks a soft drink as athletic events, fireworks, and celebrations are going on around her.
Answer: drink, event, firework

Problem: What are the most important words?
selection of various different types of gravel for patios and paving at a garden centre
Answer: gravel, patio, pave, selection, type

Problem: What are the most important words?
The skier descended down the slope.
Answer:
descend, skier, slope