What are the keywords in the following sentence? hotel features a wide variety of themed rooms
feature, hotel, room

What are the keywords in the following sentence? mountain with longtail boat passing by
boat, mountain, pass

What are the keywords in the following sentence? A girl is buying vegetables for dinner.
buy, dinner, vegetable

What are the keywords in the following sentence? astronaut floating in outer space with the earth and spaceship
astronaut, space, spaceship