Input: Identify the most salient words:

Planes flying in formation releasing red, white, and blue smoke behind them.

Output: fly
formation
release

Input: Identify the most salient words:

a ring forming a heart in a book

Output: book
form
heart

Input: Identify the most salient words:

nd law a line drawn to any planet sweeps out equal areas in equal time intervals .

Output: draw
law
line
planet

Input: Identify the most salient words:

a horse bends his head down at the shore

Output:
bend
head
horse