What are the keywords in the following sentence? rocks on the coast bathed in the pink light of sunrise
bathe, light, sunrise

What are the keywords in the following sentence? people moving on escalator and stairs to an underground metro station
escalator, stair, station

What are the keywords in the following sentence? Various trains at a train station next to people on loading dock.
dock, station, train

What are the keywords in the following sentence? chairs and table at balcony on vessel which floats in sea
balcony, float, table