What are the keywords in the following sentence? mother with daughter in a sunny meadow feeding a horse
feed, horse, meadow

What are the keywords in the following sentence? A train travelling in the snow on a track with smoke coming from it.
come, smoke, track, train, travel

What are the keywords in the following sentence? the main road connecting a city to other cities and towns
city, connect, town

What are the keywords in the following sentence? layers of clouds at different heights in the sky
cloud, layer, sky