What are the keywords in the following sentence? close up of fresh green leaf with the hole made by the caterpillar
caterpillar, close, leaf

What are the keywords in the following sentence? dramatic cloudy sky with rays of sunshine coming through to the trees below
come, sunshine, tree

What are the keywords in the following sentence? the event is in its eleventh year and is held in cities across the world
city, world, year

What are the keywords in the following sentence? map of the region indicating many of the locations referred to in text
indicate, map, region