What are the keywords in the following sentence? athlete drives automobile model in the leg
athlete, drive, model

What are the keywords in the following sentence? crowds celebrate holiday around the bonfire in a city
bonfire, celebrate, holiday

What are the keywords in the following sentence? the universe with planet and stars
planet, star, universe

What are the keywords in the following sentence? time lapse of a growing tree in interior close up scenery .
grow, scenery, tree