`1`, Seoul is located in the northern part of South Korea 

`->` Dẫn chứng : Soul is located in the northern part of South Korea .

`2`, There are nearly `10` million people live in Seoul .

`->` Dẫn chứng : It has a population of nearly `10` million people.

`3`, Yes, it is

`->` Dẫn chứng : Seoul is known around the world as a technology capital.

`4`, It takes forty minute from Seoul to Incheon Airport by train. 

`->` Dẫn chứng : Incheon International Airport is a forty minute train ride from Seoul.

`5`, Yes, they are

`->` Dẫn chứng : Gangnam, Itaewon and Hongdae are popular neighbourhoods in Seoul.