1. The plaintiffs' claims against the defendants are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. The plaintiffs' family relations and residence status 1) plaintiffs A and B are the network D (hereinafter "the network").

The Plaintiff is the parent of the Plaintiff, and the Plaintiff C is the deceased’s sentence. There is a power source village in the area of the Southern-gu, Dogsan, a mountain located in the boundary of Seocho-gu Seoul Metropolitan Government and Gyeonggi-do, and the Plaintiffs and the Deceased are the Seoul Seocho-gu E Housing (hereinafter “Plaintiffs’ Housing”) owned by the Plaintiff located in the said power source village.

2) At the bottom of the slope of the lower slope of the housing of the Plaintiffs and the Magsan end, the road with a width of 6 meters (hereinafter “instant road”).

There were 20 meters high and 1m high in diameter water repair trees (hereinafter “instant water repair trees”).

On the other hand, in front of the small door adjacent to the plaintiffs' housing gate, there is a communications owner established by the defendant KT (hereinafter "the communications owner of this case") (hereinafter "the communications owner of this case"), and upon the expiration of the small door above, there is a passage that can enter the underground room of the plaintiffs' housing.

B. From September 21, 2010 to the 23th day of the same month due to the impact of the typhoon's difficulty in the occurrence of landslide in 2010, the central concentrate was made between the eurgic acid.

As a result, landslidess occurred in the Doksan's Doksan's Doksan's Doksan's Doksan's Doksan's Doksan's Doksan's Doksan's ground.

C. The instant accident of human life and flood accident occurred. (1) From July 26, 2011 to the Gangnam-gu Seoul Special Metropolitan City, Seocho-gu, and Gangnam-gu, the concentration of maximum of 112.5 meters per hour was made on the basis of the South port observation station from July 27, 2011 to the next day. As a result, from July 27, 2011 to 08:40,000 square meters in the aggregate of 13 districts, areas, and 690,00 square meters in Myeonsan-si. The Plaintiff and the Deceased are presumed to have caused a landslide between 07:40 to 07:58.2) On July 27, 2011, the Plaintiff and the Deceased are likely to leave the Donsan-si and the instant communications station.