sentence: A black screen appears and a lot of white words are displayed that include the description of the video and the website. sentence: A man and a woman are standing in a kitchen that looks like a business kitchen and he's showing her how to sharpen knives by demonstrating and talking, and then also letting her try to sharpen the knives as well and shows her how to check for sharpness. sentence: When the man is done sharpening the knives he takes one in his hand and rubs it on the counter, then continues to hold it in his left hand as he's talking to the woman. sentence:  A black screen appears and more white letters appear giving different websites, naming companies that had a part in the video, and including the steps that were taken during the man training the woman.