What are the keywords in the following sentence? cosmos flowers swaying in the wind under sky
flower, sky, sway

What are the keywords in the following sentence? An old train with smoke coming out of it
come, smoke, train

What are the keywords in the following sentence? cantilever bridge from the top
bridge, cantilever, top

What are the keywords in the following sentence? blossoming pink lotus flower on a garden pond
blossom, flower, pond