Input: Identify the most salient words:

A group people left the city square to return to work.

Output: city
leave
work

Input: Identify the most salient words:

beautiful panning time lapse across the township in the daytime with bright blue skies and cumulus clouds

Output: cloud
daytime
lapse

Input: Identify the most salient words:

roast mixed vegetables in a baking dish

Output: dish
roast
vegetable

Input: Identify the most salient words:

fast flowing clouds while changing form in the blue sky

Output:
change
form
sky