sentence: A window cleaning commercial demonstrates all the materials and techniques need to clean a house window. sentence:   The commercial begins with a closeup up a two story house and the interior of the house including a line of large windows. sentence:   Images of a person cleaning a window, soap, a bucket and sponge are showed along with a chalkboard with ingredients needed to clean a window. sentence:   A person cleans a window using all of the tools, including removing screens to clean them and removing stickers on windows.