メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.784932493499 35.4094692535617, 136.783615502204 35.4095023559008, 136.783604503991 35.4090898701747, 136.783585845249 35.4086512337909, 136.784895255222 35.4086083199083, 136.784904155864 35.4088191857694, 136.784917058927 35.4092394940687, 136.784932493499 35.4094692535617)) ^^http://www.opengis.net/ont/geosparql#wktLiteral