Input: Identify the most salient words:

christmas tree growing on a tree trunk in the moss

Output: moss
tree
trunk

Input: Identify the most salient words:

time lapse of shadows moving across rocks

Output: move
rock
shadow

Input: Identify the most salient words:

a woman cries as she leaves flowers to pay her respects

Output: flower
pay
respect

Input: Identify the most salient words:

stained glass window depicting nativity scene in the cathedral

Output:
cathedral
depict
scene