Input: Identify the most salient words:

Two guys are camping on a mountain under a tent.

Output: camp
mountain
tent

Input: Identify the most salient words:

As someone says this he pushes his way past the startled butler, pulling a handkerchief from the man's pocket.

Output: handkerchief
pocket
pull
push
way

Input: Identify the most salient words:

A trolley car moves down the tracks in a city.

Output: car
city
track

Input: Identify the most salient words:

horses outside eating in the rain .

Output:
eat
horse
rain