sharpening a pencil changes the shape of the pencil
slate_pencil is pencil. after_pencil has been_sharpened_pencil_shorter pencil_sharpener is not sharpener. wooden_pencil is pencil. colored_pencil is pencil. pencil_sharpener is device_to_sharpen_pencils. pencil_sharpener is sharpener. pencil_sharpener has blade pencil_sharpener has not blade pencil is figure.