Input: Identify the most salient words:

a police officer stood guard outside the home where

Output: guard
home
officer
stand

Input: Identify the most salient words:

a general view of a train arriving at station

Output: arrive
station
train
view

Input: Identify the most salient words:

plane flying around the world

Output: fly
plane
world

Input: Identify the most salient words:

storm on the sea after a rain .

Output:
rain
sea
storm