Input: Identify the most salient words:

offshore paragliding by hauling by speed boat at the sea around a city

Output: boat
haul
sea

Input: Identify the most salient words:

only one can unlock the key to my heart .

Output: heart
key
unlock

Input: Identify the most salient words:

soldiers board a helicopter as they participate in advanced amphibious training .

Output: board
helicopter
training

Input: Identify the most salient words:

wooden bed frame for supporting a mattress

Output:
frame
mattress
support