Input: Identify the most salient words:

a soldier stands guard at an illegal refinery being demolished by armed force under the ongoing

Output: force
soldier
stand

Input: Identify the most salient words:

the leaves of biological species turn color from green to yellow in the autumn

Output: autumn
leave
specie

Input: Identify the most salient words:

beautiful aerial footage of sunrise on the sea with silhouette of boats .

Output: boat
sea
silhouette
sunrise

Input: Identify the most salient words:

the upper floors of the building partially covered in fog .

Output:
building
cover
floor