Problem: What are the most important words?
visitors pose with rugged cowboys in the mountain town of us census designated place .
Answer: census, designate, place, visitor

Problem: What are the most important words?
mountain rises above fog in the valley below .
Answer: fog, mountain, rise

Problem: What are the most important words?
An Emirates commercial plane is preparing to taxi down the runway at an airport on a cloudy day.
Answer:
airport, plane, prepare, runway