2012 Korea National League

Columns: Team | Location | Stadium | Stadium capacity
Ansan H FC | Ansan | Ansan Wa~ Stadium | 35,000 | Busan Transportation Corporation | Busan | Busan Gudeok Stadium | 24,363 | Changwon City | Changwon | Changwon Football Center | 15,500 | Cheonan City | Cheonan | Cheonan Stadium | 32,000 | Chungju Hummel | Chungju | Chungju Stadium | 15,000 | Daejeon Korea Hydro & Nuclear Power | Daejeon | Daejeon Hanbat Stadium | 20,618 | Gangneung City | Gangneung | Gangneung Stadium | 22,333

Example questions:
What is the capacity of a stadium which is home ground to a 2012 Korean National League team who were final champions of the Korea National League ? | What is the name of a 2012 Korean National League team playing home games on a stadium that previously had a capacity of 30000 people ? | What is the capacity of a stadium located in the third most-populous city in the Hoseo region , where there is a 2012 Korean National League team ? | What is the name of the 2012 Korean National League team playing home games on a stadium that is also home ground for Gyeongnam FC ?

Answers:
22,333 | Busan Transportation Corporation | 32,000 | Changwon City