What are the keywords in the following sentence? a train loaded with containers left the city arrived
arrive, city, train

What are the keywords in the following sentence? dramatic silhouette of tree against a dark sky and sunset
silhouette, sky, sunset, tree

What are the keywords in the following sentence? tennis player reacts during her match against tennis player at the tennis tournament .
match, player, react, tournament

What are the keywords in the following sentence? Vehicles traveling on roadway near intersection with traffic signals.
intersection, roadway, travel, vehicle