Input: Identify the most salient words:

a helicopter flies south as planes and helicopters attack a fire approaching

Output: fly
helicopter
plane

Input: Identify the most salient words:

wait all worth it for diehard fans who camped out on eve of fans day

Output: camp
day
fan

Input: Identify the most salient words:

the city uses unique parking to prevent cars from accessing specific reserved

Output: access
car
city
parking
reserve

Input: Identify the most salient words:

pan around places of worship from the hill

Output:
hill
place
worship