Input: Identify the most salient words:

work through a city remains on track for a completion .

Output: city
remain
work

Input: Identify the most salient words:

cloud and mist swirling around the summit at the head

Output: cloud
summit
swirl

Input: Identify the most salient words:

religious leader received politician in his private library

Output: leader
library
politician
receive

Input: Identify the most salient words:

a helicopter coming in to land over the building

Output:
building
come
land