メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.73215645062 35.4385051920029, 136.732057989082 35.4387340853479, 136.729676741957 35.4383643930618, 136.729684951612 35.4379201868327, 136.729695874546 35.437506831367, 136.731088012427 35.4377327955462, 136.7318653041 35.4378591446434, 136.732395494019 35.4380463576767, 136.732379342017 35.4380817194673, 136.732270855865 35.4382870234907, 136.73215645062 35.4385051920029)) ^^http://www.opengis.net/ont/geosparql#wktLiteral