creating pencil requires percentages down biceps
marker is pen_with_fat_tip. mechanical_pencil is pencil. pencil is tool_for_writing_and_drawing. pencil is writing_device. after_pencil has been_sharpened_pencil_shorter pencil is writing_implement. pencil_of_conics is geometrical_construction. pencil_drawing is pen_or_pencil_drawing. colored_pencil is pencil.