Input: Identify the most salient words:

this retaining wall was feet tall at its highest point and was installed .

Output: instal
retain
wall

Input: Identify the most salient words:

big grey lizard sitting on a stone near the sea

Output: lizard
sit
stone

Input: Identify the most salient words:

the green slopes of gorge and snowy mountains on the distance reflect in waters of the tiny pond .

Output: distance
mountain
pond

Input: Identify the most salient words:

german city with reflection in the lake .

Output:
city
lake
reflection