Input: Identify the most salient words:

Man explaining where to find the PSI guide in your car so tires can be inflated

Output: car
explain
inflate
tire

Input: Identify the most salient words:

portrait of a students studying in library

Output: library
portrait
study

Input: Identify the most salient words:

tourist attraction under snow and structure .

Output: attraction
snow
structure

Input: Identify the most salient words:

an astronaut drifting in space is rescued by a space shuttle orbiting earth

Output:
astronaut
drift
earth
orbit
shuttle