What are the keywords in the following sentence? A group of people are raising an umbrella on a beach.
beach, raise, umbrella

What are the keywords in the following sentence? an old blue wooden barn surrounded by lush green vegetation on the north shore
barn, surround, vegetation

What are the keywords in the following sentence? A biker parked his bike.
bike, biker, park

What are the keywords in the following sentence? plants grow in the only areas of the building which receive sunlight .
grow, plant, receive, sunlight