Input: Identify the most salient words:

a computer can copy data from a cd made in operating system .

Output: computer
copy
datum

Input: Identify the most salient words:

monarch butterfly on a flower sipping the nectar

Output: butterfly
nectar
sip

Input: Identify the most salient words:

A giraffe lowering its head eating grass off the ground.

Output: eat
grass
ground
head
lower

Input: Identify the most salient words:

A huge crowd is in the street having a pillow fight.

Output:
crowd
fight
street