What are the keywords in the following sentence? A boys shadow shows on the wall as he skateboards on the sidewalk.
sidewalk, skateboard, wall

What are the keywords in the following sentence? author in a garden of flowers
author, flower, garden

What are the keywords in the following sentence? grizzly bears live throughout the mountains .
bear, live, mountain

What are the keywords in the following sentence? celebrity won recurring competition in july last year
celebrity, competition, recur, win