You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "George Keys, is a former New Zealand rower, who won an Olympic Bronze medal at the 1988 Summer Olympics in which city, that is the capital, and largest metropolis of the Republic of Korea?" whose answer is Seoul.
Each document should contain about 30 words, and these documents should contain useful information.

Query: capital and largest metropolis of the Republic of Korea
Useful Output:

Doc 1: Seoul, the capital of South Korea, has a population of 10 million and is focusing on creativity, engagement and citizen happiness.
Doc 2: List of cities ; Daegu · Busan · Pyongyang ; Fourth largest city in South Korea · Second most populous city in South Korea · Third and the last capital of Goguryeo
Doc 3: Seoul is the capital and largest metropolis of South Korea, with more than 26 million residents in its metropolitan area.
Doc 4: Seoul, officially the Seoul Special City, is the capital and largest metropolis of South Korea. With surrounding Incheon metropolis and Gyeonggi province.
Doc 5: Seoul, South Korea's capital and largest city, is an intriguing blend of ancient temples and palaces, traditional markets and modern skyscrapers.