メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.859310302919 37.4279948962824, 138.859196156612 37.4280104511454, 138.858522305063 37.4281188050913, 138.858394921321 37.4282560446397, 138.858243891361 37.4282379190399, 138.857653328371 37.4278552011003, 138.85797652898 37.4279057529452, 138.85873220428 37.4275334413787, 138.859260711234 37.4274850897537, 138.859584041263 37.4279454887765, 138.859310302919 37.4279948962824)) ^^http://www.opengis.net/ont/geosparql#wktLiteral