user
I AM OF SAME COLOR IN AND OUT.   FOUND IN EVERY COUNTRY.   EVERY ONE HAS ONE OR 100  GUESS WHAT I AM??
A: mainland
B: ottoman empire
C: azerbaijan
D: tshirt
E: huns
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>