Input: Identify the most salient words:

retro steam engine resting on the tracks

Output: engine
rest
track

Input: Identify the most salient words:

tall trees grow on the edge of the lush green swamp .

Output: grow
swamp
tree

Input: Identify the most salient words:

celebrity and her mother join in a protest calling for democracy .

Output: call
democracy
protest

Input: Identify the most salient words:

family and friends of the graduates fill sports facility on wednesday afternoon .

Output:
family
fill
graduate