A chef dressed in a white chef's outfit is demonstrating how to sharpen kitchen knives using a tool called Rada knife sharpener.  He is standing in a kitchen in front of the counter that has a variety of raw vegetables displayed.  He places a kitchen towel on the counter and then places the knife on top of it.  He then demonstrates how to use the Rada sharpening tool to sharpen the kitchen knife by running iit back and forth in gentle and steady motion.