Input: Identify the most salient words:

rays of sunshine breaking through clouds of a stormy sky

Output: ray
sky
sunshine

Input: Identify the most salient words:

inner gate of building function in the city

Output: building
function
gate

Input: Identify the most salient words:

map showing sites mentioned in the text

Output: map
site
text

Input: Identify the most salient words:

People are waiting to claim their bags in a crowded airport

Output:
airport
bag
claim