What are the keywords in the following sentence? a tray with a variety of food including carrots
carrot, include, tray

What are the keywords in the following sentence? firefighters rest after battling the inferno .
battle, firefighter, inferno

What are the keywords in the following sentence? An empty restaurant with two employees working behind the counter.
counter, employee, restaurant, work

What are the keywords in the following sentence? hand operates the mouse next to a laptop
hand, mouse, operate