Input: Identify the most salient words:

christmas angel with a trumpet flies over the city

Output: angel
fly
trumpet

Input: Identify the most salient words:

greenish light from an aurora as seen from space over country

Output: country
light
space

Input: Identify the most salient words:

wrought iron gate and stone arch at entrance to a church

Output: arch
gate
stone

Input: Identify the most salient words:

cubs relax with their mother .

Output:
cub
mother
relax