Input: Identify the most salient words:

group of friends hiking together through a forest

Output: forest
friend
hike

Input: Identify the most salient words:

A bathtub and toilet in a room with many windows.

Output: bathtub
room
window

Input: Identify the most salient words:

boats grounded at low tide in the harbour

Output: ground
harbour
tide

Input: Identify the most salient words:

part of the old city walls around a city .

Output:
city
part
wall