Input: Identify the most salient words:

an aircraft moves into position to receive fuel from cargo aircraft

Output: fuel
move
position
receive

Input: Identify the most salient words:

several bees collecting nectar on a sunflower

Output: bee
collect
sunflower

Input: Identify the most salient words:

a city under construction looking southwards

Output: city
construction
look

Input: Identify the most salient words:

guests at the event included hockey great and olympic athlete and her brother

Output:
athlete
event
guest