Problem: What are the most important words?
the building is a modern structure of reinforced concrete supported by pillars
Answer: pillar, structure, support

Problem: What are the most important words?
car that will try to travel around continent on a single tank of fuel
Answer: car, continent, travel

Problem: What are the most important words?
bright ornament in a circle with dragonfly and flower
Answer:
circle, flower, ornament