Input: Identify the most salient words:

elk bask in the field while the clouds grow increasingly ominous .

Output: cloud
field
grow

Input: Identify the most salient words:

mix a white brick and dark stone for a striking high contrast exterior .

Output: brick
exterior
stone

Input: Identify the most salient words:

men performing a ritual at a festival

Output: festival
perform
ritual

Input: Identify the most salient words:

the number of neutrons that atoms of a given element contains can vary .

Output:
atom
element
number