Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Gochang, Hwasun and Ganghwa Dolmen Sites' has mentioned 'South Korea' in the following places:
Occurrence Sentence Text Source
It is the biggest stone in South Korea with measures of 2.6 xc3x97 7.1 xc3x97 5.5 meters, but it only has two supporting stones.
South Korea's dolmen is mostly concentrated in South Jeolla Province.