Make up a riddle and give me an answer to the riddle.
Riddle: I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost everyone. What am I?

Answer: Pencil Lead.
Complete the following task based on the instruction and optional input provided.### Instruction:
Make up a riddle and give me an answer to the riddle.

### Output:
Riddle: I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost everyone. What am I?

Answer: Pencil Lead.