メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.250773998317 36.6929765362272, 137.251390486788 36.6929247036719, 137.251367930897 36.6932600627365, 137.251371768465 36.6936469405064, 137.251355161734 36.6940310859045, 137.251342717884 36.694344540532, 137.251179798813 36.6943738040267, 137.250268117843 36.694528421137, 137.249079953232 36.6947288476695, 137.248215555259 36.6936524453579, 137.247970747209 36.6933529657591, 137.248411751123 36.6932242449411, 137.249097268064 36.6931125325121, 137.249872632932 36.6930514456279, 137.250213303103 36.6930132586102, 137.250731480428 36.6929808612451, 137.250773998317 36.6929765362272)) ^^http://www.opengis.net/ont/geosparql#wktLiteral