メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.604551087249 35.3169288090024, 136.602429728289 35.3170093856865, 136.601734361566 35.3170282402078, 136.601389272965 35.3160160666027, 136.602038261194 35.3158699628413, 136.602015395236 35.3158037334328, 136.604027050916 35.3153447887111, 136.604551087249 35.3169288090024)) ^^http://www.opengis.net/ont/geosparql#wktLiteral