What are the keywords in the following sentence? An Apple instruction book with a mouse and keyboard next to it.
book, keyboard, mouse

What are the keywords in the following sentence? the trail crosses the stream numerous times on the way to the falls .
cross, trail, way

What are the keywords in the following sentence? slim athletic girls in silhouette practicing a healthy lifestyle with yoga on the beach at sunrise
beach, practice, silhouette, sunrise

What are the keywords in the following sentence? A bear is walking in a zoo habitat.
bear, habitat, walk