Input: Identify the most salient words:

tree silhouetted against a sky full of storm clouds

Output: cloud
silhouette
tree

Input: Identify the most salient words:

Two young, tagged cows peering through the slats of a fence

Output: cow
fence
peer
tag

Input: Identify the most salient words:

a shot of the town from a nearby mountain

Output: mountain
shot
town

Input: Identify the most salient words:

religious leader meets president during an audience in his private library

Output:
audience
leader
president