Input: Identify the most salient words:

a ship being towed by a tug out of port

Output: port
ship
tow

Input: Identify the most salient words:

a roaring fire blazing away in an old fashioned fireplace

Output: blaze
fire
fireplace

Input: Identify the most salient words:

warrior in black dress with swords .

Output: dress
sword
warrior

Input: Identify the most salient words:

stairs made of books on a concept of learning and achievement of success .

Output:
book
stair
success