Input: Identify the most salient words:

An elephant is roaming freely in his enclosure.

Output: elephant
enclosure
roam

Input: Identify the most salient words:

chicken appetizer filled with vegetables, and carrots, cucumbers,sauce

Output: carrot
sauce
vegetable

Input: Identify the most salient words:

two sub trains sitting on tracks next to a station

Output: sit
station
track
train

Input: Identify the most salient words:

the slot canyon at the mouth where it meets tourist attraction

Output:
attraction
canyon
mouth