Input: Identify the most salient words:

leaves changing to autumn colours on a maple

Output: colour
leave
maple

Input: Identify the most salient words:

Tourists touring a museum with Roman art.

Output: museum
tour
tourist

Input: Identify the most salient words:

summertime with the trees and flowers in full bloom

Output: bloom
flower
tree

Input: Identify the most salient words:

A guard fires the gun at someone.

Output:
fire
guard
gun