Input: Identify the most salient words:

dead leaf with autumn colors floating on the water

Output: color
leaf
water

Input: Identify the most salient words:

angle view of cattle grazing in a field

Output: cattle
field
graze
view

Input: Identify the most salient words:

an aircraft lands on the flight deck of ship

Output: deck
land
ship

Input: Identify the most salient words:

time lapse of storm clouds covering the skies and heavy rain

Output:
cloud
cover
rain