Input: Identify the most salient words:

chairs and table at balcony on vessel which floats in sea

Output: balcony
sea
table

Input: Identify the most salient words:

green farm tractor pulling a plough in a field

Output: field
plough
pull
tractor

Input: Identify the most salient words:

People await the arrival of an elevated train in the cold winter.

Output: arrival
await
train

Input: Identify the most salient words:

villages around a city in the mountainous region

Output:
city
region
village