Input: Identify the most salient words:

portrait of little girl with a crown leaning against blue wall

Output: lean
portrait
wall

Input: Identify the most salient words:

the pilots of squadron in front of a fighter aircraft

Output: aircraft
pilot
squadron

Input: Identify the most salient words:

A passenger train at the end of a set of tracks in a building .

Output: building
set
track
train

Input: Identify the most salient words:

massive lobsters caught by the local fishermen .

Output:
catch
fisherman
lobster