Input: Identify the most salient words:

Tourists on a walking tour of England.

Output: tour
tourist
walk

Input: Identify the most salient words:

female student conducting research in a lab

Output: lab
research
student

Input: Identify the most salient words:

An antique looking clock beside an owl with a candle in it.

Output: clock
look
owl

Input: Identify the most salient words:

time lapse of clouds moving around the mountains at the lake

Output:
cloud
lake
lapse
mountain
move