Input: Identify the most salient words:

woman waits for her child at the bottom of the stairs into metro station .

Output: bottom
stair
wait

Input: Identify the most salient words:

an ethnically mixed class of pupils at a school

Output: class
pupil
school

Input: Identify the most salient words:

sunrise over a distant hill with mist rising from the near ground .

Output: hill
mist
rise

Input: Identify the most salient words:

soldiers launch an attack from their trenches during military conflict

Output:
attack
conflict
trench