Question: what are the 5 regions of asia and their countries?
Answer: Central Asia (Tajikistan, Uzbekistan, Kazakhstan, Turkmenistan, Kyrgyzstan) ... 
East Asia (China, Mongolia, North Korea, South Korea, Japan, Hong Kong, Taiwan, Macau) ... 
South Asia (Sri Lanka, Bangladesh, India, Afghanistan, Pakistan, Bhutan, Nepal, the Maldives)