メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.344953212065 43.7604747688841, 142.345365066188 43.7607468797937, 142.345156458788 43.760894730829, 142.344591732688 43.7613197691957, 142.344263852408 43.761617203594, 142.342925850319 43.7611961420348, 142.343110245799 43.7608411851124, 142.343470520842 43.7601997519012, 142.343683300989 43.7603487268917, 142.344196100713 43.7599560132557, 142.344349335229 43.7600605227734, 142.344420418966 43.7601316807764, 142.344953212065 43.7604747688841)) ^^http://www.opengis.net/ont/geosparql#wktLiteral