メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.557829633224 43.1122834434192, 141.559025746605 43.1135788942079, 141.559587025874 43.1141909774488, 141.560204222046 43.1148128184822, 141.560100426319 43.1148787951577, 141.559398404664 43.1153082102402, 141.559276404879 43.1153624014743, 141.558430511235 43.114433401061, 141.558135971403 43.1141099131673, 141.557357141206 43.1132288978098, 141.556909765371 43.1127170038833, 141.555959266438 43.1116295047031, 141.556814680662 43.1112070955561, 141.557829633224 43.1122834434192)) ^^http://www.opengis.net/ont/geosparql#wktLiteral