Input: Identify the most salient words:

shoppers walk by empty shelves of products in a supermarket .

Output: shopper
supermarket
walk

Input: Identify the most salient words:

parking a fishing boat above the harbour at bay

Output: bay
boat
park

Input: Identify the most salient words:

the prickly cactus grow in the garden during summer

Output: garden
grow
summer

Input: Identify the most salient words:

stump of the trunk that remains after the old tree and it is overgrown with moss .

Output:
moss
overgrow
tree
trunk