メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.778352923634 43.2153527014127, 141.777788238351 43.2153034650822, 141.777657289684 43.2153200156121, 141.777472401712 43.2153670765716, 141.777210261849 43.2154377296998, 141.777073860429 43.2154692364982, 141.774954976661 43.2143750871582, 141.775193058461 43.21412070979, 141.77556096913 43.213745483916, 141.775951615077 43.2133270283732, 141.776397198661 43.212841210938, 141.776907161492 43.2130879224625, 141.777196465886 43.2132338522276, 141.777062072684 43.2135349372573, 141.776931534282 43.2136358129491, 141.776925236936 43.2136854378918, 141.7772672437 43.2140173249683, 141.777436519231 43.2141859688316, 141.777656727315 43.214427119953, 141.777854230482 43.2146576986657, 141.778145733536 43.2150559048677, 141.778308772847 43.2152734003656, 141.778352923634 43.2153527014127)) ^^http://www.opengis.net/ont/geosparql#wktLiteral