Input: Identify the most salient words:

The pizza box has been left with two leftover pieces.

Output: box
leave
piece

Input: Identify the most salient words:

A bowl of a type of citrus fruit.

Output: bowl
fruit
type

Input: Identify the most salient words:

men of tribe receiving the visit of tourists

Output: receive
tourist
visit

Input: Identify the most salient words:

Giraffes leaning low to eat from the ground

Output:
eat
giraffe
ground
lean