What are the keywords in the following sentence? steam rising from the dam on a cool morning with warm water
morning, rise, water

What are the keywords in the following sentence? A train with smoke billowing out of its stacks chugs down a track through the woods.
billow, smoke, track, train

What are the keywords in the following sentence? A wooden shelf filled with plates and cups.
fill, plate, shelf

What are the keywords in the following sentence? interior graphics add interest to any room
add, interest, room