Input: Identify the most salient words:

a couple of sheep in the yard with one eating grass

Output: couple
eat
grass
sheep

Input: Identify the most salient words:

celebrity leaves airport after charming the crowds on sunday morning .

Output: celebrity
leave
morning

Input: Identify the most salient words:

The skateboarder skated down the street.

Output: skate
skateboarder
street

Input: Identify the most salient words:

collection of pieces of technology will soon get a new home in a museum .

Output:
collection
home
museum