What are the keywords in the following sentence? A streetcar is traveling along the tracks through the city.
city, streetcar, track

What are the keywords in the following sentence? the colossal statue of military commander built as a lasting monument to himself and his wife
commander, monument, statue

What are the keywords in the following sentence? forward controls the ball during their football match against a city at stadium
ball, city, control, match

What are the keywords in the following sentence? A high speed train traveling between a mountain and lake.
lake, train, travel