What are the keywords in the following sentence? a train being operated on a train track
operate, track, train

What are the keywords in the following sentence? a living room with couches a chair and a shelf
chair, room, shelf

What are the keywords in the following sentence? She gently wraps the chain around her ankle.
ankle, chain, wrap

What are the keywords in the following sentence? A elephant walking the edge of its raised enclosure at a zoo.
elephant, enclosure, raise