Input: Identify the most salient words:

man hiking a mountain with his dog

Output: dog
hike
mountain

Input: Identify the most salient words:

established trail in the forest

Output: establish
forest
trail

Input: Identify the most salient words:

windows from the sitting room facing terrace

Output: room
terrace
window

Input: Identify the most salient words:

people have brunch on the sidewalk as pedestrians pass by

Output:
pass
pedestrian
sidewalk