What are the keywords in the following sentence? light streams through windows at the railroad and ferry terminal creating a beautiful silhouette
ferry, railroad, silhouette, stream, window

What are the keywords in the following sentence? A skier travels downhill through the snow under a cloudy sky.
sky, snow, travel

What are the keywords in the following sentence? Sheep grazing in a green field with trees. 
field, sheep, tree

What are the keywords in the following sentence? this living room features a bold fireplace surround with dark wood

feature, room, wood