What are the keywords in the following sentence? earth the only planet with large amounts of water on its surface .
planet, surface, water

What are the keywords in the following sentence? tree and roots forming the face of a woman
form, root, tree

What are the keywords in the following sentence? overlooking the city of park in winter
city, park, winter

What are the keywords in the following sentence? pediatric patient with a teddy bear being tended to by nurses in the hospital
nurse, patient, tend