What are the keywords in the following sentence? empty wooden pier with dark stormy clouds over sea and yellow fishing boat in the distance
boat, cloud, sea

What are the keywords in the following sentence? A blender full of fruit that is mixing up a smoothie.
blender, fruit, smoothie

What are the keywords in the following sentence? military conflict was fought between forces under military commander and forces
conflict, fight, force

What are the keywords in the following sentence? celebrity spotted arriving in style for a departing flight
celebrity, depart, flight