Input: Identify the most salient words:

A duo of train engines coming into a station down some tracks.

Output: come
engine
station
track

Input: Identify the most salient words:

biological species is growing around sea as here above the southwest coast

Output: grow
sea
specie

Input: Identify the most salient words:

A baby zebra being fed by its mother.

Output: feed
mother
zebra

Input: Identify the most salient words:

close up of a tiny green and yellow spider in its web

Output:
close
spider
web