Consider the question. Graphite is referred to as lead in what writing implement?
Options:
- lead pencil
- black
- very heavy
- news article
- card game
 If the answer is 'lead pencil'; explain the reasoning:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Lead pencil is a writing implement or art medium usually constructed of a narrow, solid pigment core inside a protective casing. Graphite is referred to as lead in lead pencil, a writing implement.