メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.770064017602 35.4436617502564, 136.768679388443 35.4438487336913, 136.768685541656 35.4438838235038, 136.768542931095 35.4438971936838, 136.768537179863 35.4438679505819, 136.768423167503 35.4432718274199, 136.769113693784 35.4432876067462, 136.769114435462 35.4432157454469, 136.769957029419 35.4431314929238, 136.769963775545 35.4431596476899, 136.770017019138 35.443427768099, 136.770064017602 35.4436617502564)) ^^http://www.opengis.net/ont/geosparql#wktLiteral