Input: Identify the most salient words:

cannons on the city walls that surround the colonial city

Output: cannon
city
surround

Input: Identify the most salient words:

demonstrator on car animate the crowds

Output: car
crowd
demonstrator

Input: Identify the most salient words:

the icons of different fruits on the colored squares in the style of flat

Output: fruit
icon
square

Input: Identify the most salient words:

image of books on a shelf

Output:
book
image
shelf