Input: Identify the most salient words:

A crowd of people are protesting their government.

Output: crowd
government
protest

Input: Identify the most salient words:

tile installed in a shower

Output: instal
shower
tile

Input: Identify the most salient words:

traffic approaching a red light in a rain storm

Output: approach
light
storm

Input: Identify the most salient words:

a building with growing trees

Output:
building
grow
tree