Input: Identify the most salient words:

A ewe nurses a hungry lamb in a grassy pasture.

Output: ewe
lamb
pasture

Input: Identify the most salient words:

butterfly flies to a flower and collects nectar

Output: butterfly
collect
flower
nectar

Input: Identify the most salient words:

a ray of sunshine penetrates the gloomy skies

Output: ray
sky
sunshine

Input: Identify the most salient words:

a tree growing bent out of shape by country

Output:
country
grow
tree