Input: Identify the most salient words:

Red train carrying passengers under trees in daytime.

Output: carry
passenger
train
tree

Input: Identify the most salient words:

a stone bridge over a stream leading into a lake

Output: bridge
lake
lead

Input: Identify the most salient words:

the cool blue waters reflect the white clouds that float above

Output: cloud
float
reflect
water

Input: Identify the most salient words:

trees silhouetted against a golden sunset and cloudy sky .

Output:
silhouette
sky
sunset
tree