Input: Identify the most salient words:

hikers cross a stream heading north towards us state

Output: cross
hiker
stream

Input: Identify the most salient words:

the sun lights up a patch of sky

Output: light
patch
sky

Input: Identify the most salient words:

a train on the electrified railway

Output: electrify
railway
train

Input: Identify the most salient words:

a city featuring religious elements and a temple or place of worship

Output:
city
element
feature
place
worship