Input: Identify the most salient words:

fog and clouds fill valleys after an october storm

Output: fill
fog
valley

Input: Identify the most salient words:

A large airplane is parked on a runway near some trucks.

Output: airplane
park
runway
truck

Input: Identify the most salient words:

A baggage handler is loading luggage onto a plane.

Output: handler
load
luggage

Input: Identify the most salient words:

Skiers on a ski run in the mountains

Output:
mountain
run
skier