Input: Identify the most salient words:

unknown spider found under the bark of an eucalyptus tree

Output: bark
spider
tree

Input: Identify the most salient words:

navigating through the little town was quite a challenge because every corner looks similar

Output: corner
look
town

Input: Identify the most salient words:

A man guiding a train down a train track.

Output: guide
track
train

Input: Identify the most salient words:

a protester shouts slogans during a protest rally against visit

Output:
protester
rally
shout
slogan