What are the keywords in the following sentence? a city is known as the city built on hills
build, city, know

What are the keywords in the following sentence? Child eating hotdog with onion rings and ketchup.
eat, hotdog, ketchup

What are the keywords in the following sentence? cargo ships float in the sea .
float, sea, ship

What are the keywords in the following sentence? A bathroom featuring an oval free standing tub.
bathroom, feature, tub