user
WHEN YOU KMOW WHAT I AM I AM SOMETHING BUT WHEN YOU DON'T KNOW WHAT I AM THEN I AM NOTHING.  WHAT AM I?
A: riddle
B: knows
C: unknowingness
D: sit quietly
E: edge
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>