What are the keywords in the following sentence? railroad tracks with light at the end of the tunnel
light, track, tunnel

What are the keywords in the following sentence? A giraffe towering over tall green leaf covered trees.
giraffe, tower, tree

What are the keywords in the following sentence? book tells the moving and controversial story of elephants in a zoo during military conflict .
book, story, tell

What are the keywords in the following sentence? Two people are talking while tearing open garbage bags and pulling out the contents.
bag, pull, talk