Problem: What are the most important words?
pilots check out the scenery while flying over a city .
Answer: city, fly, pilot

Problem: What are the most important words?
A train station with various sets of tracks and two passenger trains on the tracks.
Answer: set, station, track, train

Problem: What are the most important words?
Two women are showing how to wrap material around for a dress.
Answer:
dress, material, wrap