メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.9041553945 43.4711369178542, 141.904109097075 43.4711445487141, 141.904051496898 43.4708926142589, 141.90393365959 43.470587402946, 141.903795800782 43.4702966533999, 141.903662332863 43.4701075361237, 141.903466575875 43.4699200583029, 141.903342703255 43.4697962657989, 141.903264039718 43.4696145919085, 141.903222438037 43.4694820097839, 141.903895659358 43.4693896623633, 141.904284611728 43.4693400232149, 141.904715680693 43.4710446482076, 141.9041553945 43.4711369178542)) ^^http://www.opengis.net/ont/geosparql#wktLiteral