Input: Identify the most salient words:

an unique fireplace made from tiles installed in room

Output: fireplace
room
tile

Input: Identify the most salient words:

The people are taking their exams in the classroom.

Output: classroom
exam
take

Input: Identify the most salient words:

train running over railway in the city at sunny day .

Output: day
run
train

Input: Identify the most salient words:

us census designated place on the left with waterfall and fog

Output:
census
designate
fog
place