Input: Identify the most salient words:

A clock that is on the side of a structure.

Output: clock
side
structure

Input: Identify the most salient words:

a balloon is seen during event along road .

Output: balloon
event
road

Input: Identify the most salient words:

the game goes on while firefighters battle a smoky blaze at a building .

Output: battle
blaze
building
firefighter

Input: Identify the most salient words:

a hydro electric dam being built by country

Output:
build
country
dam