Social problems are classified into a total of 11 categories as follows.
1. Low birth rate and super-aging
2. Inequality problem
3. Instability of future generations' lives
4. Job insecurity
5. Environmental impacts between countries
6. Cybercrime
7. Energy and resource depletion
8. North Korea, Security, and Unification
9. Climate change and natural disasters
10. Transition between low growth and growth strategy
11. Unclassifiable

Example:South Korea's suicide rate is about 1.5 times higher than Japan's, twice as high as China, Hong Kong, Poland and the United States, and 10 times higher than Bahrain or Greece. And it is more than double the average of 11.5 OECD member countries. Even South Korea's suicide rate is said to be higher than that of U.S. soldiers who suffer from post-traumatic PTSD due to war. According to a report by the US Department of Defense, the 2005 suicide rate among US troops stationed in Iraq suffering from the fear and stress of war was 19.9 per 100,000 population. In the same year, Korea had 31.6 people in 2005 based on OECD standards. As another standard, the suicide rate in Korea in 2018 according to the OECD was 25.5, and the suicide rate of American veterans in the same year was 27.5. Veterans are people who suffer from PTSD, and despite the fact that Korea's suicide rate is much lower than in the past, it can be seen that there is not much difference between the two.

Answer which category the sentence "Example" belongs to.
If there is no category to which the sentence belongs, answer "Unclassifiable".
The answer method is to answer in the form of "Category [NUMBER]: [NAME]".
