What are the keywords in the following sentence? four white sheep eating green grass near a fence
eat, fence, grass, sheep

What are the keywords in the following sentence? silhouette of witches and a cauldron
cauldron, silhouette, witch

What are the keywords in the following sentence? hack and slash video game
game, hack, slash

What are the keywords in the following sentence? a woman carries an umbrella during wet weather
carry, umbrella, weather