Input: Identify the most salient words:

demonstrators protesting against the inauguration of politician as president

Output: inauguration
politician
protest

Input: Identify the most salient words:

barge passing a lock on a canal

Output: barge
canal
pass

Input: Identify the most salient words:

a collection of stamps in the pages of a passport

Output: page
passport
stamp

Input: Identify the most salient words:

leaves reflect on the still water

Output:
leave
reflect
water