Input: Identify the most salient words:

an isolated tree in the middle of a grassy field towards evening time

Output: middle
time
tree

Input: Identify the most salient words:

pink clouds in the sky at afternoon

Output: afternoon
cloud
sky

Input: Identify the most salient words:

a small bathroom with a window to let light in.

Output: bathroom
light
window

Input: Identify the most salient words:

bridges over tourist attraction connecting english metropolitan borough and a city

Output:
attraction
city
connect