Input: Identify the most salient words:

a fashion look featuring ankle booties .

Output: bootie
fashion
feature
look

Input: Identify the most salient words:

this ring with a big sapphire a city is now known all over the world

Output: know
sapphire
world

Input: Identify the most salient words:

An Asian teacher is writing equations on the chalkboard for her students.

Output: chalkboard
equation
write

Input: Identify the most salient words:

dog in the fountain cooling down on hot summer day

Output:
cool
day
fountain