Input: Identify the most salient words:

firefighters discuss tactics whilst taking part in a simulated chemical incident

Output: discuss
incident
part
simulate
tactic

Input: Identify the most salient words:

an Amtrak train moving long train tracks in a city

Output: city
move
track
train

Input: Identify the most salient words:

the windows in this bathroom are frosted to provide privacy .

Output: privacy
provide
window

Input: Identify the most salient words:

A train traveling along tracks in a forest.

Output:
forest
train
travel