Input: Identify the most salient words:

Several skiers leave tracks while gliding across the snow.

Output: glide
skier
snow

Input: Identify the most salient words:

bark of an old tree with moss and ivy

Output: bark
ivy
tree

Input: Identify the most salient words:

scuba divers exploring an underwater sea cave in a tropical coral reef

Output: cave
explore
scuba

Input: Identify the most salient words:

light streams through windows at the railroad and ferry terminal creating a beautiful silhouette

Output:
create
railroad
silhouette
stream
window