Input: Identify the most salient words:

one of the piers supporting the railroad bridge

Output: bridge
pier
support

Input: Identify the most salient words:

smoke rises from a train carrying flammable and toxic gas .

Output: rise
smoke
train

Input: Identify the most salient words:

He looks across the boat at richard parker who sleeps on the bench in a small shaft of sunlight.

Output: boat
look
shaft
sleep
sunlight

Input: Identify the most salient words:

At the airport airplanes are waiting to load passengers

Output:
airplane
load
passenger