Input: Identify the most salient words:

farmers use a combine to harvest wheat on the outskirts

Output: combine
farmer
harvest

Input: Identify the most salient words:

we talked about all the fun things we like to do in the snow

Output: like
snow
thing

Input: Identify the most salient words:

times like this make me really wish i had a friend who i could just talk to .

Output: friend
talk
time

Input: Identify the most salient words:

a ratio compares numbers by division

Output:
compare
number
ratio