What are the keywords in the following sentence? silhouettes of boats passing under the bridge on the waterfront at sunset
boat, bridge, pass, sunset

What are the keywords in the following sentence? poster advertising the novel by novelist from a city
novel, novelist, poster

What are the keywords in the following sentence? government agency advised against all but essential travel
advise, agency, travel

What are the keywords in the following sentence? a macro shot of leaves dripping water
leave, shot, water