Input: Identify the most salient words:

a stream with patches of sunlight flowing through tall grass

Output: grass
patch
sunlight

Input: Identify the most salient words:

polar bears have an extraordinary sense of smell .

Output: bear
sense
smell

Input: Identify the most salient words:

cat rescues a man up a tree

Output: cat
rescue
tree

Input: Identify the most salient words:

One man working at a fish market while a couple of men and one woman are browsing fish

Output:
fish
market
work