Input: Identify the most salient words:

the system can detect leaks and with a second unit shut off the water .

Output: detect
system
water

Input: Identify the most salient words:

a bus stops to pick up some passengers

Output: bus
passenger
pick
stop

Input: Identify the most salient words:

A large, hand-tossed pizza with a variety of toppings.

Output: pizza
topping
toss

Input: Identify the most salient words:

slow motion shot at beautiful weather

Output:
motion
shoot
weather