Input: Identify the most salient words:

fireman fighting a fire from aerial ladder with blue sky

Output: fire
fireman
ladder

Input: Identify the most salient words:

an aircraft takes flight in support of military conflict .

Output: aircraft
conflict
take

Input: Identify the most salient words:

hoar frost covering the market town in winter

Output: cover
frost
hoar
winter

Input: Identify the most salient words:

Several men working to repair a McDonald's sign at their place of employment

Output:
employment
place
repair
work