What are the keywords in the following sentence? mist at sunrise over the mountains
mist, mountain, sunrise

What are the keywords in the following sentence? A building with various spires next to a clock tower.
building, spire, tower

What are the keywords in the following sentence? Train parked in a train station on a small set of tracks.
set, station, track, train

What are the keywords in the following sentence? soccer player will definitely miss the clash after injuring his shoulder against german city .
city, clash, player