Input: Identify the most salient words:

time lapse of moving clouds on a cloudy night

Output: cloud
lapse
move
night

Input: Identify the most salient words:

the sitting room is filled with books in various languages on art and history .

Output: art
fill
room

Input: Identify the most salient words:

example to paint your own pottery .

Output: example
paint
pottery

Input: Identify the most salient words:

firefighters responded to the emergency this morning

Output:
emergency
firefighter
respond