sentence: A man in is talking in a kitchen with a knife, a chopping board and bowl in front of him. sentence:  He lifts a sharpening stone from the yellow green bowl filled with water and talk about if for a while. sentence:  He lifts the knife and starts sharpening the knife with the stone and the talking continues. sentence:  He shows something and put between the stone and knife but put it away before sharpening the knife, he repeat the procedure before dipping the knife in water. sentence:  He repeat his way of sharpening  the knife with coin then dips it in water then sharpen it again.