Input: Identify the most salient words:

tricky trail through the trees just before the open valley

Output: trail
tree
valley

Input: Identify the most salient words:

food bought from a supermarket

Output: buy
food
supermarket

Input: Identify the most salient words:

biological species searches the water for a small meal .

Output: search
specie
water

Input: Identify the most salient words:

this home covered itself in lights to celebrate western christian holiday

Output:
celebrate
cover
holiday