Input: Identify the most salient words:

An airplane preparing for takeoff on an airstrip.

Output: airplane
airstrip
prepare

Input: Identify the most salient words:

A small black cat reaching up to the inside of a yellow umbrella with both paws.

Output: cat
reach
umbrella

Input: Identify the most salient words:

time lapse of clouds moving in through mountain range below as the sun rises

Output: cloud
move
rise

Input: Identify the most salient words:

blue cargo ship leaving the port at sunny day

Output:
day
leave
ship