Input: Identify the most salient words:

guests arrive at winter wedding ceremony .

Output: arrive
ceremony
guest

Input: Identify the most salient words:

an airplane taxiing to take off on a runway

Output: airplane
runway
taxi

Input: Identify the most salient words:

flight over republic outside the plane window leaving a city .

Output: city
leave
window

Input: Identify the most salient words:

it follows the discovery of the biggest planet ever seen orbiting stars last month .

Output:
follow
orbit
planet