Input: Identify the most salient words:

firefighters responded to a small brush fire that broke out in officials said .

Output: fire
official
respond

Input: Identify the most salient words:

the cross of builder and the dove are a symbol of deity

Output: builder
cross
deity

Input: Identify the most salient words:

a cluster of galaxies light years in the constellation

Output: cluster
constellation
galaxy

Input: Identify the most salient words:

healthy heart in the round shape and normal heart beat rhythm

Output:
beat
heart
shape