Input: Identify the most salient words:

A runner is beginning a marathon.

Output: begin
marathon
runner

Input: Identify the most salient words:

the windows in this bathroom are frosted to provide privacy .

Output: bathroom
frost
privacy

Input: Identify the most salient words:

macro shot of a spider waiting for the prey in his web .

Output: shot
spider
web

Input: Identify the most salient words:

friends warming feet up by the fire on the beach at sunset

Output:
beach
fire
friend
sunset