What are the keywords in the following sentence? Different suitcases lay on the ground with one open
ground, lie, suitcase

What are the keywords in the following sentence? a train is arriving to a station in the day
arrive, day, train

What are the keywords in the following sentence? a cruise passing through suspension bridge
bridge, cruise, pass

What are the keywords in the following sentence? moving footage of some autumn leaves on the ground
autumn, ground, move